/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/recursive/Ackermann01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:43:06,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:43:06,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:43:06,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:43:06,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:43:06,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:43:06,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:43:06,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:43:06,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:43:06,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:43:06,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:43:06,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:43:06,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:43:06,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:43:06,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:43:06,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:43:06,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:43:06,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:43:06,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:43:06,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:43:06,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:43:06,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:43:06,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:43:06,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:43:06,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:43:06,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:43:06,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:43:06,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:43:06,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:43:06,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:43:06,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:43:06,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:43:06,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:43:06,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:43:06,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:43:06,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:43:06,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:43:06,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:43:06,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:43:06,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:43:06,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:43:06,262 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 07:43:06,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:43:06,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:43:06,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:43:06,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:43:06,290 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:43:06,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:43:06,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:43:06,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:43:06,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:43:06,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:43:06,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:43:06,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:43:06,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:43:06,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:43:06,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:43:06,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:43:06,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:43:06,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:43:06,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:43:06,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:43:06,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:43:06,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:43:06,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:43:06,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:43:06,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:43:06,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:43:06,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:43:06,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:43:06,296 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:43:06,296 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 07:43:06,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:43:06,823 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:43:06,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:43:06,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:43:06,830 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:43:06,831 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 07:43:06,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f332d65a7/1c9ccf547c5d41b7976061cfda0481e2/FLAG0a0cf4526 [2020-09-25 07:43:07,462 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:43:07,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann01-2.c [2020-09-25 07:43:07,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f332d65a7/1c9ccf547c5d41b7976061cfda0481e2/FLAG0a0cf4526 [2020-09-25 07:43:07,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f332d65a7/1c9ccf547c5d41b7976061cfda0481e2 [2020-09-25 07:43:07,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:43:07,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:43:07,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:07,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:43:07,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:43:07,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:07" (1/1) ... [2020-09-25 07:43:07,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:07, skipping insertion in model container [2020-09-25 07:43:07,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:07" (1/1) ... [2020-09-25 07:43:07,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:43:07,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:43:08,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:08,077 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:43:08,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:08,117 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:43:08,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08 WrapperNode [2020-09-25 07:43:08,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:08,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:43:08,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:43:08,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:43:08,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (1/1) ... [2020-09-25 07:43:08,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (1/1) ... [2020-09-25 07:43:08,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (1/1) ... [2020-09-25 07:43:08,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (1/1) ... [2020-09-25 07:43:08,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (1/1) ... [2020-09-25 07:43:08,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (1/1) ... [2020-09-25 07:43:08,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (1/1) ... [2020-09-25 07:43:08,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:43:08,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:43:08,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:43:08,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:43:08,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (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 07:43:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:43:08,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:43:08,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-25 07:43:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:43:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:43:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:43:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-25 07:43:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:43:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:43:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:43:08,594 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:43:08,595 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:43:08,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:08 BoogieIcfgContainer [2020-09-25 07:43:08,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:43:08,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:43:08,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:43:08,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:43:08,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:43:07" (1/3) ... [2020-09-25 07:43:08,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60184532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:08, skipping insertion in model container [2020-09-25 07:43:08,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:08" (2/3) ... [2020-09-25 07:43:08,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60184532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:08, skipping insertion in model container [2020-09-25 07:43:08,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:08" (3/3) ... [2020-09-25 07:43:08,627 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann01-2.c [2020-09-25 07:43:08,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:43:08,654 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:43:08,687 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:43:08,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:43:08,717 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:43:08,717 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:43:08,717 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:43:08,717 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:43:08,717 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:43:08,718 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:43:08,718 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:43:08,740 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 07:43:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 07:43:08,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:08,749 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] [2020-09-25 07:43:08,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:08,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:08,756 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-25 07:43:08,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:08,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802811821] [2020-09-25 07:43:08,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:08,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:43:09,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 07:43:09,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 07:43:09,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 07:43:09,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:43:09,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:09,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:09,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:09,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:09,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:09,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:09,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 07:43:09,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:09,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:09,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:09,367 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 07:43:09,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802811821] [2020-09-25 07:43:09,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:09,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 07:43:09,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460731026] [2020-09-25 07:43:09,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:43:09,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:09,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:43:09,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:43:09,402 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-25 07:43:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:09,650 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-09-25 07:43:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:43:09,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-25 07:43:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:09,679 INFO L225 Difference]: With dead ends: 59 [2020-09-25 07:43:09,679 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 07:43:09,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 07:43:09,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-25 07:43:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 07:43:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-09-25 07:43:09,775 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2020-09-25 07:43:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:09,778 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-09-25 07:43:09,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:43:09,778 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-09-25 07:43:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 07:43:09,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:09,783 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:43:09,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:43:09,784 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:09,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:09,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-25 07:43:09,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:09,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418146982] [2020-09-25 07:43:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:09,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 07:43:10,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 07:43:10,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:43:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 07:43:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:43:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:43:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:10,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:10,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:10,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:10,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:43:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:43:10,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:10,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:10,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 07:43:10,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:10,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 07:43:10,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418146982] [2020-09-25 07:43:10,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:10,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:43:10,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226296734] [2020-09-25 07:43:10,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:43:10,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:10,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:43:10,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:43:10,378 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2020-09-25 07:43:10,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:10,735 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 07:43:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 07:43:10,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 07:43:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:10,742 INFO L225 Difference]: With dead ends: 50 [2020-09-25 07:43:10,742 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 07:43:10,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:43:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 07:43:10,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 07:43:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 07:43:10,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-09-25 07:43:10,773 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 34 [2020-09-25 07:43:10,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:10,774 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-09-25 07:43:10,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:43:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-09-25 07:43:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 07:43:10,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:10,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-09-25 07:43:10,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:43:10,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:10,786 INFO L82 PathProgramCache]: Analyzing trace with hash 2094172607, now seen corresponding path program 1 times [2020-09-25 07:43:10,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:10,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358917900] [2020-09-25 07:43:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:10,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:10,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:11,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:11,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:43:11,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:43:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1120 [2020-09-25 07:43:11,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:11,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 07:43:11,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:43:11,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:11,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:11,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:11,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:11,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:11,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:11,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:11,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:11,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:11,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:11,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:11,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 07:43:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 07:43:12,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:43:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:43:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:12,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:43:12,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:12,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:12,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:12,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 07:43:12,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:12,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 07:43:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 07:43:12,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358917900] [2020-09-25 07:43:12,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:12,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:43:12,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382129153] [2020-09-25 07:43:12,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:43:12,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:12,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:43:12,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:43:12,260 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 7 states. [2020-09-25 07:43:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:12,361 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2020-09-25 07:43:12,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:43:12,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-09-25 07:43:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:12,363 INFO L225 Difference]: With dead ends: 75 [2020-09-25 07:43:12,364 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 07:43:12,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:43:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 07:43:12,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-09-25 07:43:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 07:43:12,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-25 07:43:12,375 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 43 [2020-09-25 07:43:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:12,376 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-25 07:43:12,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:43:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-25 07:43:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 07:43:12,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:12,378 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-09-25 07:43:12,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:43:12,379 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:12,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:12,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-25 07:43:12,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:12,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590010990] [2020-09-25 07:43:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 07:43:12,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 07:43:12,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:43:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 07:43:12,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 07:43:12,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:12,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:12,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:12,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:12,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:12,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:12,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:13,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:13,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:43:13,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 07:43:13,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:13,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:43:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:43:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:13,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:13,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:13,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:13,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:13,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 07:43:13,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:13,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:13,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:13,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:43:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:13,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:13,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:13,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:13,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:43:13,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:13,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:13,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:13,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:13,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:43:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:13,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:13,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:13,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:13,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:43:13,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:13,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:13,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-09-25 07:43:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 07:43:13,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590010990] [2020-09-25 07:43:13,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:13,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:43:13,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171765664] [2020-09-25 07:43:13,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:43:13,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:13,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:43:13,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:43:13,297 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-09-25 07:43:13,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:13,724 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-09-25 07:43:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:43:13,724 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 07:43:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:13,726 INFO L225 Difference]: With dead ends: 71 [2020-09-25 07:43:13,726 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 07:43:13,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-25 07:43:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 07:43:13,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2020-09-25 07:43:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 07:43:13,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2020-09-25 07:43:13,740 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 53 [2020-09-25 07:43:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:13,741 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2020-09-25 07:43:13,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:43:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2020-09-25 07:43:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 07:43:13,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:13,744 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2020-09-25 07:43:13,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:43:13,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:13,745 INFO L82 PathProgramCache]: Analyzing trace with hash 358541405, now seen corresponding path program 2 times [2020-09-25 07:43:13,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:13,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717028207] [2020-09-25 07:43:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:13,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:13,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 07:43:18,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:43:18,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:43:18,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:43:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 07:43:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 07:43:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:18,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:18,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:18,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:18,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:18,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:18,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 07:43:20,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:43:20,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1917 [2020-09-25 07:43:20,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:43:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:43:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 07:43:20,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:20,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 07:43:20,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:43:20,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:20,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:43:20,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:20,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:43:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:20,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:43:20,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 07:43:20,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:43:20,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:20,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:20,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:20,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:43:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:20,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 07:43:20,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717028207] [2020-09-25 07:43:20,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:20,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:43:20,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85911087] [2020-09-25 07:43:20,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:43:20,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:20,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:43:20,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:43:20,987 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand 10 states. [2020-09-25 07:43:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:21,143 INFO L93 Difference]: Finished difference Result 125 states and 192 transitions. [2020-09-25 07:43:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 07:43:21,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 07:43:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:21,146 INFO L225 Difference]: With dead ends: 125 [2020-09-25 07:43:21,146 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 07:43:21,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:43:21,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 07:43:21,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 07:43:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 07:43:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 110 transitions. [2020-09-25 07:43:21,165 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 110 transitions. Word has length 63 [2020-09-25 07:43:21,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:21,166 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 110 transitions. [2020-09-25 07:43:21,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:43:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 110 transitions. [2020-09-25 07:43:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 07:43:21,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:21,169 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2020-09-25 07:43:21,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:43:21,169 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1096450289, now seen corresponding path program 3 times [2020-09-25 07:43:21,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:21,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291339018] [2020-09-25 07:43:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 07:43:21,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-09-25 07:43:21,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 07:43:21,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 07:43:21,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 07:43:21,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:21,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 07:43:21,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:21,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:21,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:21,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:21,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:21,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 07:43:21,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 07:43:21,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:21,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:43:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:21,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 07:43:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:21,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:21,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:43:22,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:22,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 07:43:22,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:43:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:22,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:43:22,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:22,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:22,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 07:43:22,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:43:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:22,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:22,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:22,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:22,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:43:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:22,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:22,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:43:22,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:22,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:22,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 07:43:22,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291339018] [2020-09-25 07:43:22,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:22,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 07:43:22,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108459914] [2020-09-25 07:43:22,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 07:43:22,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:22,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 07:43:22,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:43:22,259 INFO L87 Difference]: Start difference. First operand 81 states and 110 transitions. Second operand 12 states. [2020-09-25 07:43:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:22,665 INFO L93 Difference]: Finished difference Result 118 states and 165 transitions. [2020-09-25 07:43:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 07:43:22,666 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-09-25 07:43:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:22,669 INFO L225 Difference]: With dead ends: 118 [2020-09-25 07:43:22,669 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 07:43:22,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-09-25 07:43:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 07:43:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 79. [2020-09-25 07:43:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-25 07:43:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2020-09-25 07:43:22,685 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 63 [2020-09-25 07:43:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:22,686 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2020-09-25 07:43:22,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 07:43:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2020-09-25 07:43:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 07:43:22,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:22,688 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:43:22,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:43:22,688 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:22,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:22,689 INFO L82 PathProgramCache]: Analyzing trace with hash 449882030, now seen corresponding path program 4 times [2020-09-25 07:43:22,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:22,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891870500] [2020-09-25 07:43:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 07:43:27,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:43:27,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4406 [2020-09-25 07:43:27,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 07:43:27,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:43:27,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:27,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:27,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 07:43:27,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-09-25 07:43:27,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 07:43:27,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:43:27,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 07:43:27,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:43:27,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 07:43:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:43:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:27,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:43:27,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:43:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:27,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:43:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:27,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:43:27,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:27,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 21 [2020-09-25 07:43:27,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 07:43:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:27,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:43:27,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 07:43:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:27,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:27,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:27,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:27,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:43:27,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:27,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 19 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 07:43:27,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891870500] [2020-09-25 07:43:27,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:27,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 07:43:27,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506265430] [2020-09-25 07:43:27,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:43:27,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:27,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:43:27,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:43:27,994 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand 4 states. [2020-09-25 07:43:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:28,066 INFO L93 Difference]: Finished difference Result 144 states and 218 transitions. [2020-09-25 07:43:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:43:28,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-09-25 07:43:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:28,072 INFO L225 Difference]: With dead ends: 144 [2020-09-25 07:43:28,072 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 07:43:28,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:43:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 07:43:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 07:43:28,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 07:43:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 104 transitions. [2020-09-25 07:43:28,104 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 104 transitions. Word has length 73 [2020-09-25 07:43:28,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:28,104 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 104 transitions. [2020-09-25 07:43:28,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:43:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 104 transitions. [2020-09-25 07:43:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-25 07:43:28,107 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:28,108 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 07:43:28,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 07:43:28,108 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash 990403329, now seen corresponding path program 5 times [2020-09-25 07:43:28,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:28,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890125710] [2020-09-25 07:43:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:32,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 07:43:32,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:43:32,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4696 [2020-09-25 07:43:32,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:32,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:43:32,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 07:43:32,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:43:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:32,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:32,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:32,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 07:43:32,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:32,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:32,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:32,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:43:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 07:43:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 07:43:33,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-09-25 07:43:33,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 07:43:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 07:43:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:43:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 07:43:33,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 07:43:33,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 07:43:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:43:33,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 07:43:33,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:43:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 07:43:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:33,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:43:33,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:43:33,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:33,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:33,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:43:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 07:43:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:33,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:43:33,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:43:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 07:43:33,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 07:43:33,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:43:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:43:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 07:43:33,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 07:43:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:33,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:33,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:43:33,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:43:33,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:33,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:43:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 47 proven. 47 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-25 07:43:33,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890125710] [2020-09-25 07:43:33,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:33,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 07:43:33,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151722378] [2020-09-25 07:43:33,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 07:43:33,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:33,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 07:43:33,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-25 07:43:33,957 INFO L87 Difference]: Start difference. First operand 78 states and 104 transitions. Second operand 14 states. [2020-09-25 07:43:34,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:34,281 INFO L93 Difference]: Finished difference Result 116 states and 168 transitions. [2020-09-25 07:43:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 07:43:34,281 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-09-25 07:43:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:34,282 INFO L225 Difference]: With dead ends: 116 [2020-09-25 07:43:34,282 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 07:43:34,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2020-09-25 07:43:34,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 07:43:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 07:43:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 07:43:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 07:43:34,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2020-09-25 07:43:34,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:34,285 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 07:43:34,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 07:43:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 07:43:34,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 07:43:34,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 07:43:34,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 07:43:34,574 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 07:43:34,575 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 07:43:34,575 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 07:43:34,575 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 07:43:34,575 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 07:43:34,575 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 07:43:34,576 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 15 23) no Hoare annotation was computed. [2020-09-25 07:43:34,576 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (not (= |ackermann_#in~m| 0))) [2020-09-25 07:43:34,576 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 15 23) the Hoare annotation is: true [2020-09-25 07:43:34,576 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 07:43:34,576 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|) (not (= |ackermann_#in~m| 0))) [2020-09-25 07:43:34,577 INFO L264 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: (and (or (and (<= 2 |ackermann_#t~ret1|) (<= 1 |ackermann_#in~m|)) (= |ackermann_#in~m| 0)) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-09-25 07:43:34,577 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 07:43:34,577 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 07:43:34,577 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 07:43:34,577 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-25 07:43:34,577 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 07:43:34,578 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 07:43:34,578 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-09-25 07:43:34,578 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 07:43:34,578 INFO L268 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-09-25 07:43:34,578 INFO L268 CegarLoopResult]: For program point L22-6(line 22) no Hoare annotation was computed. [2020-09-25 07:43:34,578 INFO L268 CegarLoopResult]: For program point L15(lines 15 23) no Hoare annotation was computed. [2020-09-25 07:43:34,578 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 15 23) no Hoare annotation was computed. [2020-09-25 07:43:34,578 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 07:43:34,579 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 07:43:34,579 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 07:43:34,579 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 07:43:34,579 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 07:43:34,579 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 07:43:34,579 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 46) no Hoare annotation was computed. [2020-09-25 07:43:34,579 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 46) no Hoare annotation was computed. [2020-09-25 07:43:34,580 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-25 07:43:34,580 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 07:43:34,580 INFO L271 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true [2020-09-25 07:43:34,580 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-25 07:43:34,580 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 07:43:34,580 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-25 07:43:34,581 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 07:43:34,581 INFO L268 CegarLoopResult]: For program point L34(lines 34 39) no Hoare annotation was computed. [2020-09-25 07:43:34,581 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-09-25 07:43:34,581 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 46) the Hoare annotation is: true [2020-09-25 07:43:34,581 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-25 07:43:34,581 INFO L268 CegarLoopResult]: For program point L41(lines 41 45) no Hoare annotation was computed. [2020-09-25 07:43:34,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:43:34 BoogieIcfgContainer [2020-09-25 07:43:34,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:43:34,594 INFO L168 Benchmark]: Toolchain (without parser) took 26770.16 ms. Allocated memory was 140.0 MB in the beginning and 380.6 MB in the end (delta: 240.6 MB). Free memory was 102.2 MB in the beginning and 204.7 MB in the end (delta: -102.6 MB). Peak memory consumption was 138.1 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:34,595 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 07:43:34,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.01 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:34,596 INFO L168 Benchmark]: Boogie Preprocessor took 35.01 ms. Allocated memory is still 140.0 MB. Free memory was 92.2 MB in the beginning and 90.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:34,598 INFO L168 Benchmark]: RCFGBuilder took 447.92 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 90.8 MB in the beginning and 167.5 MB in the end (delta: -76.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:34,599 INFO L168 Benchmark]: TraceAbstraction took 25973.69 ms. Allocated memory was 202.9 MB in the beginning and 380.6 MB in the end (delta: 177.7 MB). Free memory was 166.9 MB in the beginning and 204.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 139.9 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:34,602 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.01 ms. Allocated memory is still 140.0 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.01 ms. Allocated memory is still 140.0 MB. Free memory was 92.2 MB in the beginning and 90.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 447.92 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 90.8 MB in the beginning and 167.5 MB in the end (delta: -76.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25973.69 ms. Allocated memory was 202.9 MB in the beginning and 380.6 MB in the end (delta: 177.7 MB). Free memory was 166.9 MB in the beginning and 204.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 139.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.5s, OverallIterations: 8, TraceHistogramMax: 8, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 267 SDtfs, 343 SDslu, 1089 SDs, 0 SdLazy, 845 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 105 PreInvPairs, 139 NumberOfFragments, 49 HoareAnnotationTreeSize, 105 FomulaSimplifications, 421 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 115 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 22.7s InterpolantComputationTime, 445 NumberOfCodeBlocks, 445 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 52059 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 325/435 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...