/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=0.8 --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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:43,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:43,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:43,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:43,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:43,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:43,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:43,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:43,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:43,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:43,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:43,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:43,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:43,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:43,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:43,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:43,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:43,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:43,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:43,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:43,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:43,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:43,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:43,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:43,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:43,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:43,165 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:43,166 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:43,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:43,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:43,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:43,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:43,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:43,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:43,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:43,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:43,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:43,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:43,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:43,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:43,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:43,184 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 07:52:43,227 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:43,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:43,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:43,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:43,229 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:43,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:43,230 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:43,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:43,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:43,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:43,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:43,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:43,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:43,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:43,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:43,233 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:43,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:43,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:43,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:43,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:43,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:43,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:43,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:43,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:43,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:43,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:43,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:43,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:43,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:43,236 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:52:43,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:43,688 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:43,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:43,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:43,695 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:43,696 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 07:52:43,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae311fa86/895ed76da8574843a4d72b64203a1d5c/FLAG9ee89dc3b [2020-09-25 07:52:44,443 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:44,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label02.c [2020-09-25 07:52:44,457 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae311fa86/895ed76da8574843a4d72b64203a1d5c/FLAG9ee89dc3b [2020-09-25 07:52:44,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae311fa86/895ed76da8574843a4d72b64203a1d5c [2020-09-25 07:52:44,662 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:44,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:44,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:44,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:44,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:44,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:44" (1/1) ... [2020-09-25 07:52:44,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:44, skipping insertion in model container [2020-09-25 07:52:44,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:44" (1/1) ... [2020-09-25 07:52:44,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:44,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:45,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:45,208 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:45,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:45,447 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:45,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45 WrapperNode [2020-09-25 07:52:45,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:45,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:45,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:45,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:45,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (1/1) ... [2020-09-25 07:52:45,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (1/1) ... [2020-09-25 07:52:45,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (1/1) ... [2020-09-25 07:52:45,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (1/1) ... [2020-09-25 07:52:45,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (1/1) ... [2020-09-25 07:52:45,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (1/1) ... [2020-09-25 07:52:45,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (1/1) ... [2020-09-25 07:52:45,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:45,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:45,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:45,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:45,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (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 07:52:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:45,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:46,929 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:46,929 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:46,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:46 BoogieIcfgContainer [2020-09-25 07:52:46,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:46,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:46,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:46,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:46,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:44" (1/3) ... [2020-09-25 07:52:46,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:46, skipping insertion in model container [2020-09-25 07:52:46,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:45" (2/3) ... [2020-09-25 07:52:46,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:46, skipping insertion in model container [2020-09-25 07:52:46,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:46" (3/3) ... [2020-09-25 07:52:46,955 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label02.c [2020-09-25 07:52:46,966 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:46,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:47,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:47,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:47,041 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:47,042 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:47,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:47,042 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:47,042 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:47,042 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:47,042 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:52:47,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 07:52:47,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:47,099 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] [2020-09-25 07:52:47,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:47,106 INFO L82 PathProgramCache]: Analyzing trace with hash -299401006, now seen corresponding path program 1 times [2020-09-25 07:52:47,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:47,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 07:52:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:47,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:52,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 07:52:52,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:52,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 07:52:52,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:52,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:52:52,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 07:52:52,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:52:52,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:52,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:52:52,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:52,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 07:52:52,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:52,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:52,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:52,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:52,675 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 07:52:52,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 07:52:52,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:52,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:52,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492242676] [2020-09-25 07:52:52,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:52,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:52,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:52,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:52,708 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:52:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:54,851 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 07:52:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:54,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-09-25 07:52:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:54,893 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 07:52:54,893 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 07:52:54,903 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 07:52:54,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 07:52:55,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 07:52:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 07:52:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 07:52:55,014 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 119 [2020-09-25 07:52:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:55,015 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 07:52:55,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 07:52:55,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 07:52:55,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:55,026 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] [2020-09-25 07:52:55,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:55,027 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:55,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:55,028 INFO L82 PathProgramCache]: Analyzing trace with hash -637954050, now seen corresponding path program 1 times [2020-09-25 07:52:55,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:55,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182036085] [2020-09-25 07:52:55,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:00,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 07:53:00,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:53:00,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 07:53:00,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:00,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:53:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:53:00,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:00,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:00,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:00,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:00,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:00,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:53:00,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:00,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:00,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:00,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:00,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:00,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:00,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:00,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:00,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:53:00,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:00,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:53:00,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:00,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:53:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:00,351 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 07:53:00,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182036085] [2020-09-25 07:53:00,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:00,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:00,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353547274] [2020-09-25 07:53:00,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:00,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:00,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:00,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:00,355 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 07:53:02,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:02,256 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 07:53:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:02,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 07:53:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:02,268 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 07:53:02,268 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 07:53:02,271 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 07:53:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 07:53:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 07:53:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 07:53:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 07:53:02,324 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 137 [2020-09-25 07:53:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:02,325 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 07:53:02,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:02,325 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 07:53:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 07:53:02,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:02,335 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] [2020-09-25 07:53:02,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:53:02,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1018685367, now seen corresponding path program 1 times [2020-09-25 07:53:02,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:02,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860307009] [2020-09-25 07:53:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:02,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:03,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:06,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 07:53:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:06,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3836 [2020-09-25 07:53:06,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:06,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 07:53:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 07:53:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:06,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:06,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:06,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:06,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:53:06,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:06,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:06,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:06,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:06,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:06,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:06,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:06,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:06,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:06,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 07:53:06,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 07:53:06,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:06,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:06,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:53:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:06,441 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 07:53:06,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860307009] [2020-09-25 07:53:06,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:06,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:06,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042983103] [2020-09-25 07:53:06,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:06,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:06,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:06,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:06,445 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 07:53:08,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:08,413 INFO L93 Difference]: Finished difference Result 2220 states and 2949 transitions. [2020-09-25 07:53:08,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:08,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-09-25 07:53:08,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:08,423 INFO L225 Difference]: With dead ends: 2220 [2020-09-25 07:53:08,423 INFO L226 Difference]: Without dead ends: 1361 [2020-09-25 07:53:08,427 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 07:53:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-25 07:53:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1341. [2020-09-25 07:53:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-25 07:53:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1671 transitions. [2020-09-25 07:53:08,475 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1671 transitions. Word has length 153 [2020-09-25 07:53:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:08,475 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1671 transitions. [2020-09-25 07:53:08,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1671 transitions. [2020-09-25 07:53:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 07:53:08,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:08,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:08,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:53:08,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:08,482 INFO L82 PathProgramCache]: Analyzing trace with hash 278855818, now seen corresponding path program 1 times [2020-09-25 07:53:08,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:08,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608371190] [2020-09-25 07:53:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:13,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:13,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 07:53:13,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:53:13,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 07:53:13,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:13,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 07:53:13,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 07:53:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:13,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:13,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:13,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:13,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:13,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 07:53:13,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:13,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:13,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:13,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:13,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:13,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:13,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:13,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:13,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 07:53:13,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:13,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:13,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:13,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:13,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 07:53:13,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:13,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608371190] [2020-09-25 07:53:13,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:13,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:13,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993731454] [2020-09-25 07:53:13,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:13,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:13,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:13,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:13,862 INFO L87 Difference]: Start difference. First operand 1341 states and 1671 transitions. Second operand 5 states. [2020-09-25 07:53:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:16,061 INFO L93 Difference]: Finished difference Result 3588 states and 4685 transitions. [2020-09-25 07:53:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:16,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 07:53:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:16,080 INFO L225 Difference]: With dead ends: 3588 [2020-09-25 07:53:16,080 INFO L226 Difference]: Without dead ends: 2269 [2020-09-25 07:53:16,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 07:53:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-09-25 07:53:16,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2118. [2020-09-25 07:53:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2118 states. [2020-09-25 07:53:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2706 transitions. [2020-09-25 07:53:16,215 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2706 transitions. Word has length 157 [2020-09-25 07:53:16,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:16,216 INFO L479 AbstractCegarLoop]: Abstraction has 2118 states and 2706 transitions. [2020-09-25 07:53:16,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:16,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2706 transitions. [2020-09-25 07:53:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 07:53:16,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:16,227 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:53:16,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:53:16,228 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:16,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash 234746550, now seen corresponding path program 1 times [2020-09-25 07:53:16,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:16,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492818143] [2020-09-25 07:53:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:16,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:16,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:20,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:20,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 07:53:20,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3932 [2020-09-25 07:53:20,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:20,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 07:53:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-09-25 07:53:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:20,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:20,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:20,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:20,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:53:20,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:20,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:20,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:20,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:20,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:20,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 07:53:20,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:53:20,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:20,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:20,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:20,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:53:20,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:53:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-25 07:53:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:20,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:20,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:20,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 07:53:20,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:53:20,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 07:53:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:20,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 07:53:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 77 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 07:53:20,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492818143] [2020-09-25 07:53:20,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:20,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:20,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620191322] [2020-09-25 07:53:20,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:20,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:20,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:20,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:20,738 INFO L87 Difference]: Start difference. First operand 2118 states and 2706 transitions. Second operand 7 states. [2020-09-25 07:53:23,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:23,869 INFO L93 Difference]: Finished difference Result 7587 states and 10886 transitions. [2020-09-25 07:53:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:53:23,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-09-25 07:53:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:23,913 INFO L225 Difference]: With dead ends: 7587 [2020-09-25 07:53:23,913 INFO L226 Difference]: Without dead ends: 5491 [2020-09-25 07:53:23,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 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 07:53:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2020-09-25 07:53:24,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 4877. [2020-09-25 07:53:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2020-09-25 07:53:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 6340 transitions. [2020-09-25 07:53:24,102 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 6340 transitions. Word has length 231 [2020-09-25 07:53:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:24,103 INFO L479 AbstractCegarLoop]: Abstraction has 4877 states and 6340 transitions. [2020-09-25 07:53:24,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:53:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 6340 transitions. [2020-09-25 07:53:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-25 07:53:24,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:24,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 07:53:24,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:24,136 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash 962500583, now seen corresponding path program 1 times [2020-09-25 07:53:24,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:24,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69106468] [2020-09-25 07:53:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:24,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:29,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:29,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-09-25 07:53:29,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:29,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:53:29,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:29,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:53:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 07:53:29,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 07:53:29,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:29,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:29,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:29,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:29,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:53:29,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:29,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:53:29,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:29,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:29,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:53:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:29,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:29,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:53:29,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:29,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 07:53:29,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:29,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:29,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:29,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:29,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 07:53:29,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:29,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:53:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:29,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:29,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:29,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:29,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:53:29,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:53:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 07:53:29,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:29,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:29,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 07:53:29,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:29,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 07:53:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:29,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:29,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 07:53:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 07:53:29,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:29,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:29,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 07:53:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 163 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 07:53:29,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69106468] [2020-09-25 07:53:29,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:29,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:53:29,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475390065] [2020-09-25 07:53:29,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:53:29,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:29,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:53:29,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:53:29,715 INFO L87 Difference]: Start difference. First operand 4877 states and 6340 transitions. Second operand 8 states. [2020-09-25 07:53:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:32,819 INFO L93 Difference]: Finished difference Result 11838 states and 16014 transitions. [2020-09-25 07:53:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 07:53:32,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 263 [2020-09-25 07:53:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:32,820 INFO L225 Difference]: With dead ends: 11838 [2020-09-25 07:53:32,820 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 07:53:32,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:53:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 07:53:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 07:53:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 07:53:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 07:53:32,869 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 263 [2020-09-25 07:53:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:32,869 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 07:53:32,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:53:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 07:53:32,870 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 07:53:32,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:53:32,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.