/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:08,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:08,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:08,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:08,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:08,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:08,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:08,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:08,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:08,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:08,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:08,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:08,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:08,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:08,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:08,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:08,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:08,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:08,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:08,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:08,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:08,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:08,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:08,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:08,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:08,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:08,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:08,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:08,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:08,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:08,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:08,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:08,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:08,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:08,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:08,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:08,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:08,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:08,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:08,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:08,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:08,250 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 06:46:08,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:08,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:08,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:08,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:08,302 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:08,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:08,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:08,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:08,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:08,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:08,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:08,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:08,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:08,303 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:08,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:08,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:08,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:08,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:08,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:08,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:08,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:08,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:08,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:08,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:08,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:08,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:08,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:08,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:08,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:08,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:46:08,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:08,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:08,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:08,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:08,776 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:08,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 06:46:08,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e39dccb76/d8a08699674d4b49b795442f768a1ba5/FLAG9558f2a6c [2020-09-25 06:46:09,522 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:09,523 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label53.c [2020-09-25 06:46:09,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e39dccb76/d8a08699674d4b49b795442f768a1ba5/FLAG9558f2a6c [2020-09-25 06:46:09,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e39dccb76/d8a08699674d4b49b795442f768a1ba5 [2020-09-25 06:46:09,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:09,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:09,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:09,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:09,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:09,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:09" (1/1) ... [2020-09-25 06:46:09,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8a488b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:09, skipping insertion in model container [2020-09-25 06:46:09,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:09" (1/1) ... [2020-09-25 06:46:09,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:09,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:10,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:10,469 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:10,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:10,615 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:10,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10 WrapperNode [2020-09-25 06:46:10,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:10,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:10,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:10,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:10,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (1/1) ... [2020-09-25 06:46:10,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (1/1) ... [2020-09-25 06:46:10,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (1/1) ... [2020-09-25 06:46:10,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (1/1) ... [2020-09-25 06:46:10,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (1/1) ... [2020-09-25 06:46:10,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (1/1) ... [2020-09-25 06:46:10,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (1/1) ... [2020-09-25 06:46:10,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:10,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:10,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:10,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:10,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (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 06:46:10,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:10,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:10,799 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:10,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:10,800 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:10,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:10,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:10,800 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:10,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:10,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:12,162 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:12,163 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:12,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:12 BoogieIcfgContainer [2020-09-25 06:46:12,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:12,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:12,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:12,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:12,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:09" (1/3) ... [2020-09-25 06:46:12,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792cf9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:12, skipping insertion in model container [2020-09-25 06:46:12,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:10" (2/3) ... [2020-09-25 06:46:12,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792cf9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:12, skipping insertion in model container [2020-09-25 06:46:12,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:12" (3/3) ... [2020-09-25 06:46:12,183 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label53.c [2020-09-25 06:46:12,195 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:12,207 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:12,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:12,269 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:12,269 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:12,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:12,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:12,270 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:12,270 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:12,270 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:12,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:46:12,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 06:46:12,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:12,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:12,328 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1669931929, now seen corresponding path program 1 times [2020-09-25 06:46:12,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:12,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743648762] [2020-09-25 06:46:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:13,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:13,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:14,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:17,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 06:46:17,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:17,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 06:46:17,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:17,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:46:17,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 06:46:17,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:46:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:17,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:17,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:17,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:17,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:46:17,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:17,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:17,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:17,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:17,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:46:17,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:18,027 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 06:46:18,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743648762] [2020-09-25 06:46:18,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:18,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:46:18,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625735075] [2020-09-25 06:46:18,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:46:18,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:18,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:46:18,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:46:18,063 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:46:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:20,408 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 06:46:20,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:46:20,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-09-25 06:46:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:20,441 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 06:46:20,441 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 06:46:20,453 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 06:46:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 06:46:20,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 06:46:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 06:46:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 06:46:20,595 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 164 [2020-09-25 06:46:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:20,598 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 06:46:20,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:46:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 06:46:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 06:46:20,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:20,617 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:20,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:20,617 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:20,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:20,618 INFO L82 PathProgramCache]: Analyzing trace with hash 591184877, now seen corresponding path program 1 times [2020-09-25 06:46:20,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:20,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892532612] [2020-09-25 06:46:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:20,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:22,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:22,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:25,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 06:46:25,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:46:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 06:46:25,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:25,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:25,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:46:25,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 06:46:25,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:46:26,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:26,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:26,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:26,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:26,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:26,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:26,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:26,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:26,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:26,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:26,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:26,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:26,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:46:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:26,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892532612] [2020-09-25 06:46:26,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:26,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:26,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473015038] [2020-09-25 06:46:26,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:26,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:26,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:26,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:26,109 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 06:46:28,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:28,136 INFO L93 Difference]: Finished difference Result 1757 states and 2222 transitions. [2020-09-25 06:46:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:28,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-25 06:46:28,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:28,145 INFO L225 Difference]: With dead ends: 1757 [2020-09-25 06:46:28,146 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 06:46:28,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 06:46:28,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 06:46:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1036. [2020-09-25 06:46:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 06:46:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1283 transitions. [2020-09-25 06:46:28,195 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1283 transitions. Word has length 182 [2020-09-25 06:46:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:28,195 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1283 transitions. [2020-09-25 06:46:28,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1283 transitions. [2020-09-25 06:46:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 06:46:28,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:28,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:28,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:28,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:28,202 INFO L82 PathProgramCache]: Analyzing trace with hash 156773588, now seen corresponding path program 1 times [2020-09-25 06:46:28,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:28,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560517212] [2020-09-25 06:46:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 06:46:33,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 06:46:33,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 06:46:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 06:46:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:33,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:33,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:33,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:33,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 06:46:33,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:33,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:46:33,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:33,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:46:33,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:33,568 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 06:46:33,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560517212] [2020-09-25 06:46:33,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:33,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:33,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713826636] [2020-09-25 06:46:33,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:33,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:33,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:33,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:33,573 INFO L87 Difference]: Start difference. First operand 1036 states and 1283 transitions. Second operand 5 states. [2020-09-25 06:46:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:35,610 INFO L93 Difference]: Finished difference Result 2668 states and 3421 transitions. [2020-09-25 06:46:35,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:35,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 06:46:35,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:35,618 INFO L225 Difference]: With dead ends: 2668 [2020-09-25 06:46:35,619 INFO L226 Difference]: Without dead ends: 973 [2020-09-25 06:46:35,626 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 06:46:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2020-09-25 06:46:35,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 963. [2020-09-25 06:46:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2020-09-25 06:46:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2020-09-25 06:46:35,670 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 198 [2020-09-25 06:46:35,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:35,672 INFO L479 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2020-09-25 06:46:35,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:35,672 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2020-09-25 06:46:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 06:46:35,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:35,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:35,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:35,687 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:35,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:35,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1119078680, now seen corresponding path program 1 times [2020-09-25 06:46:35,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:35,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779905136] [2020-09-25 06:46:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:40,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 06:46:40,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:46:40,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:40,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:46:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 06:46:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 06:46:40,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:40,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:40,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:40,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:40,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:40,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:40,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:46:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 06:46:41,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:41,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 06:46:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:41,177 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:41,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779905136] [2020-09-25 06:46:41,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:41,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:46:41,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562287141] [2020-09-25 06:46:41,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:46:41,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:41,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:46:41,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:46:41,181 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 8 states. [2020-09-25 06:46:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:44,674 INFO L93 Difference]: Finished difference Result 3026 states and 3931 transitions. [2020-09-25 06:46:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:44,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 202 [2020-09-25 06:46:44,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:44,687 INFO L225 Difference]: With dead ends: 3026 [2020-09-25 06:46:44,688 INFO L226 Difference]: Without dead ends: 1976 [2020-09-25 06:46:44,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:44,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-09-25 06:46:44,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1924. [2020-09-25 06:46:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1924 states. [2020-09-25 06:46:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2302 transitions. [2020-09-25 06:46:44,751 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2302 transitions. Word has length 202 [2020-09-25 06:46:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:44,752 INFO L479 AbstractCegarLoop]: Abstraction has 1924 states and 2302 transitions. [2020-09-25 06:46:44,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:46:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2302 transitions. [2020-09-25 06:46:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 06:46:44,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:44,759 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, 1, 1, 1, 1, 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 06:46:44,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:44,760 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:44,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:44,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1463653110, now seen corresponding path program 1 times [2020-09-25 06:46:44,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:44,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814221600] [2020-09-25 06:46:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:49,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 06:46:49,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:46:49,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4397 [2020-09-25 06:46:49,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:49,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:46:49,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:46:49,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:49,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:49,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:49,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:49,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:46:49,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:49,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:49,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:49,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:49,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:49,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:49,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:46:49,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:49,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:46:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:49,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:46:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:46:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 06:46:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:49,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 06:46:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:49,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814221600] [2020-09-25 06:46:49,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:49,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:49,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82361118] [2020-09-25 06:46:49,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:49,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:49,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:49,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:49,468 INFO L87 Difference]: Start difference. First operand 1924 states and 2302 transitions. Second operand 7 states. [2020-09-25 06:46:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:50,728 INFO L93 Difference]: Finished difference Result 3783 states and 4553 transitions. [2020-09-25 06:46:50,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:46:50,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 06:46:50,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:50,741 INFO L225 Difference]: With dead ends: 3783 [2020-09-25 06:46:50,741 INFO L226 Difference]: Without dead ends: 1881 [2020-09-25 06:46:50,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:46:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2020-09-25 06:46:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1861. [2020-09-25 06:46:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1861 states. [2020-09-25 06:46:50,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2211 transitions. [2020-09-25 06:46:50,794 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2211 transitions. Word has length 226 [2020-09-25 06:46:50,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:50,794 INFO L479 AbstractCegarLoop]: Abstraction has 1861 states and 2211 transitions. [2020-09-25 06:46:50,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:50,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2211 transitions. [2020-09-25 06:46:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-25 06:46:50,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:50,801 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:50,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:46:50,802 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:50,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:50,802 INFO L82 PathProgramCache]: Analyzing trace with hash -387844278, now seen corresponding path program 1 times [2020-09-25 06:46:50,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:50,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005724850] [2020-09-25 06:46:50,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:51,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:55,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-09-25 06:46:55,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:46:55,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:46:55,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:55,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:46:55,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 06:46:55,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:46:55,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:55,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:55,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:55,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:55,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:55,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:55,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:55,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:55,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:55,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:55,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:55,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:55,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:55,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:55,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:55,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:55,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:55,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:55,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:46:55,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:55,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:46:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:56,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 06:46:56,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:56,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 06:46:56,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:56,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:56,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:46:56,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:56,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005724850] [2020-09-25 06:46:56,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:56,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:56,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903024645] [2020-09-25 06:46:56,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:56,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:56,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:56,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:56,150 INFO L87 Difference]: Start difference. First operand 1861 states and 2211 transitions. Second operand 7 states. [2020-09-25 06:46:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:58,809 INFO L93 Difference]: Finished difference Result 5210 states and 6616 transitions. [2020-09-25 06:46:58,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:46:58,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-09-25 06:46:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:58,839 INFO L225 Difference]: With dead ends: 5210 [2020-09-25 06:46:58,839 INFO L226 Difference]: Without dead ends: 3371 [2020-09-25 06:46:58,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:58,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2020-09-25 06:46:58,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3283. [2020-09-25 06:46:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3283 states. [2020-09-25 06:46:58,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3283 states to 3283 states and 4097 transitions. [2020-09-25 06:46:58,964 INFO L78 Accepts]: Start accepts. Automaton has 3283 states and 4097 transitions. Word has length 227 [2020-09-25 06:46:58,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:58,964 INFO L479 AbstractCegarLoop]: Abstraction has 3283 states and 4097 transitions. [2020-09-25 06:46:58,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3283 states and 4097 transitions. [2020-09-25 06:46:58,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 06:46:58,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:58,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:58,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:46:58,984 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:58,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:58,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1351256274, now seen corresponding path program 1 times [2020-09-25 06:46:58,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:58,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295583569] [2020-09-25 06:46:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking...