/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:06:33,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:06:33,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:06:33,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:06:33,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:06:33,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:06:33,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:06:33,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:06:33,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:06:33,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:06:33,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:06:33,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:06:33,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:06:33,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:06:33,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:06:33,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:06:33,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:06:33,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:06:33,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:06:33,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:06:33,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:06:33,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:06:33,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:06:33,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:06:33,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:06:33,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:06:33,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:06:33,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:06:33,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:06:33,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:06:33,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:06:33,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:06:33,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:06:33,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:06:33,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:06:33,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:06:33,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:06:33,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:06:33,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:06:33,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:06:33,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:06:33,175 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 [2020-10-12 16:06:33,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:06:33,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:06:33,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:06:33,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:06:33,215 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:06:33,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:06:33,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:06:33,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:06:33,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:06:33,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:06:33,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:06:33,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:06:33,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:06:33,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:06:33,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:06:33,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:06:33,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:06:33,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:06:33,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:06:33,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:06:33,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:06:33,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:06:33,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:06:33,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:06:33,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:06:33,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:06:33,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:06:33,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:06:33,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:06:33,222 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:06:33,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:06:33,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:06:33,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:06:33,564 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:06:33,564 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:06:33,565 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-10-12 16:06:33,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7860af79/f1d44699cd0f4027961d55b614bfe094/FLAG073a0b596 [2020-10-12 16:06:34,117 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:06:34,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2020-10-12 16:06:34,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7860af79/f1d44699cd0f4027961d55b614bfe094/FLAG073a0b596 [2020-10-12 16:06:34,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7860af79/f1d44699cd0f4027961d55b614bfe094 [2020-10-12 16:06:34,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:06:34,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:06:34,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:06:34,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:06:34,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:06:34,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db8139c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34, skipping insertion in model container [2020-10-12 16:06:34,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:06:34,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:06:34,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:06:34,740 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:06:34,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:06:34,797 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:06:34,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34 WrapperNode [2020-10-12 16:06:34,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:06:34,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:06:34,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:06:34,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:06:34,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (1/1) ... [2020-10-12 16:06:34,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:06:34,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:06:34,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:06:34,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:06:34,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (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 [2020-10-12 16:06:35,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:06:35,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:06:35,014 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:06:35,014 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:06:35,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:06:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:06:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:06:35,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:06:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:06:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:06:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:06:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:06:35,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:06:35,359 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 16:06:35,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:06:35 BoogieIcfgContainer [2020-10-12 16:06:35,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:06:35,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:06:35,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:06:35,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:06:35,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:06:34" (1/3) ... [2020-10-12 16:06:35,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3a34db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:06:35, skipping insertion in model container [2020-10-12 16:06:35,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:06:34" (2/3) ... [2020-10-12 16:06:35,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3a34db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:06:35, skipping insertion in model container [2020-10-12 16:06:35,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:06:35" (3/3) ... [2020-10-12 16:06:35,373 INFO L109 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.c [2020-10-12 16:06:35,386 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:06:35,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-10-12 16:06:35,408 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-10-12 16:06:35,437 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:06:35,437 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:06:35,438 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:06:35,438 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:06:35,438 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:06:35,438 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:06:35,438 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:06:35,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:06:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-12 16:06:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 16:06:35,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:35,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:35,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:35,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:35,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1781845407, now seen corresponding path program 1 times [2020-10-12 16:06:35,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:35,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98409920] [2020-10-12 16:06:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:35,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:35,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 16:06:35,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:35,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-12 16:06:35,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:06:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 16:06:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 16:06:35,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:06:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:35,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:35,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:35,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:35,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:06:35,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:06:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:35,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98409920] [2020-10-12 16:06:35,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:35,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 16:06:35,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978712236] [2020-10-12 16:06:35,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 16:06:35,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:35,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 16:06:35,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:06:35,862 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-10-12 16:06:36,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:36,005 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2020-10-12 16:06:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:06:36,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-12 16:06:36,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:36,019 INFO L225 Difference]: With dead ends: 90 [2020-10-12 16:06:36,019 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 16:06:36,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:06:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 16:06:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-10-12 16:06:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 16:06:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 16:06:36,078 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 13 [2020-10-12 16:06:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:36,078 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 16:06:36,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 16:06:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 16:06:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 16:06:36,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:36,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:36,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:06:36,081 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:36,081 INFO L82 PathProgramCache]: Analyzing trace with hash -594195383, now seen corresponding path program 1 times [2020-10-12 16:06:36,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:36,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565833926] [2020-10-12 16:06:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:36,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:36,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:06:36,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:06:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-12 16:06:36,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:06:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 16:06:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:06:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:06:36,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:36,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:36,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:36,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:06:36,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:06:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:36,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565833926] [2020-10-12 16:06:36,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:36,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:06:36,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024363376] [2020-10-12 16:06:36,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:06:36,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:36,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:06:36,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:06:36,299 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-10-12 16:06:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:36,549 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2020-10-12 16:06:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:06:36,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-12 16:06:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:36,552 INFO L225 Difference]: With dead ends: 153 [2020-10-12 16:06:36,552 INFO L226 Difference]: Without dead ends: 101 [2020-10-12 16:06:36,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:06:36,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-12 16:06:36,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 58. [2020-10-12 16:06:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-12 16:06:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-10-12 16:06:36,566 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 14 [2020-10-12 16:06:36,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:36,566 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-10-12 16:06:36,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:06:36,566 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-10-12 16:06:36,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 16:06:36,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:36,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:36,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:06:36,568 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:36,568 INFO L82 PathProgramCache]: Analyzing trace with hash -597364152, now seen corresponding path program 1 times [2020-10-12 16:06:36,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:36,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56756926] [2020-10-12 16:06:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:06:36,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 16:06:36,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:06:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:06:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:06:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:36,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:36,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:36,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:06:36,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:36,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:36,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:36,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56756926] [2020-10-12 16:06:36,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:36,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:06:36,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324675264] [2020-10-12 16:06:36,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:06:36,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:36,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:06:36,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:06:36,672 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 5 states. [2020-10-12 16:06:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:36,777 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-10-12 16:06:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:06:36,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-12 16:06:36,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:36,779 INFO L225 Difference]: With dead ends: 75 [2020-10-12 16:06:36,779 INFO L226 Difference]: Without dead ends: 73 [2020-10-12 16:06:36,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:06:36,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-12 16:06:36,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2020-10-12 16:06:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 16:06:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-10-12 16:06:36,788 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 14 [2020-10-12 16:06:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:36,788 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-10-12 16:06:36,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:06:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-10-12 16:06:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 16:06:36,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:36,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:36,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:06:36,790 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:36,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1240184593, now seen corresponding path program 1 times [2020-10-12 16:06:36,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:36,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104813170] [2020-10-12 16:06:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:36,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:36,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 16:06:36,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:36,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 16:06:36,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:36,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:06:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:06:36,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:06:36,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:06:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:06:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:36,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104813170] [2020-10-12 16:06:36,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:36,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:06:36,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966482612] [2020-10-12 16:06:36,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:06:36,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:36,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:06:36,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:06:36,877 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2020-10-12 16:06:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:37,017 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-12 16:06:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:06:37,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-12 16:06:37,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:37,019 INFO L225 Difference]: With dead ends: 96 [2020-10-12 16:06:37,019 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 16:06:37,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:06:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 16:06:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 54. [2020-10-12 16:06:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 16:06:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-12 16:06:37,028 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 15 [2020-10-12 16:06:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:37,028 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-12 16:06:37,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:06:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-12 16:06:37,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 16:06:37,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:37,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:37,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:06:37,030 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:37,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:37,031 INFO L82 PathProgramCache]: Analyzing trace with hash 208986383, now seen corresponding path program 1 times [2020-10-12 16:06:37,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:37,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861820606] [2020-10-12 16:06:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:37,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:37,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:06:37,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:37,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 16:06:37,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:37,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:06:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:06:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:06:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:37,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:37,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:37,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:37,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:06:37,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:37,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:37,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861820606] [2020-10-12 16:06:37,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:37,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:06:37,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582104952] [2020-10-12 16:06:37,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:06:37,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:37,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:06:37,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:06:37,135 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-10-12 16:06:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:37,341 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2020-10-12 16:06:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:06:37,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-12 16:06:37,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:37,343 INFO L225 Difference]: With dead ends: 95 [2020-10-12 16:06:37,343 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 16:06:37,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:06:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 16:06:37,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 52. [2020-10-12 16:06:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 16:06:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-12 16:06:37,352 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 16 [2020-10-12 16:06:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:37,352 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-12 16:06:37,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:06:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-12 16:06:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 16:06:37,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:37,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:37,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:06:37,354 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:37,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1458792136, now seen corresponding path program 1 times [2020-10-12 16:06:37,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:37,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740228276] [2020-10-12 16:06:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:37,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 16:06:37,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:06:37,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 16:06:37,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:06:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:06:37,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:06:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:37,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:37,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:37,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:06:37,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:37,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:37,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740228276] [2020-10-12 16:06:37,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:37,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:06:37,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253187126] [2020-10-12 16:06:37,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:06:37,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:37,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:06:37,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:06:37,518 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 5 states. [2020-10-12 16:06:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:37,639 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-12 16:06:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:06:37,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-12 16:06:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:37,640 INFO L225 Difference]: With dead ends: 69 [2020-10-12 16:06:37,640 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 16:06:37,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:06:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 16:06:37,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 50. [2020-10-12 16:06:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 16:06:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-12 16:06:37,647 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 16 [2020-10-12 16:06:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:37,647 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-12 16:06:37,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:06:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-12 16:06:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 16:06:37,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:37,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:37,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:06:37,649 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:37,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2111353611, now seen corresponding path program 1 times [2020-10-12 16:06:37,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:37,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406380007] [2020-10-12 16:06:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:37,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 16:06:37,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:37,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 16:06:37,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:06:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 16:06:37,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:06:37,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:37,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:37,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:37,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:06:37,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:37,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:37,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406380007] [2020-10-12 16:06:37,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:37,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:06:37,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090550457] [2020-10-12 16:06:37,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:06:37,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:37,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:06:37,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:06:37,727 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 5 states. [2020-10-12 16:06:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:37,852 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-10-12 16:06:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:06:37,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-12 16:06:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:37,854 INFO L225 Difference]: With dead ends: 91 [2020-10-12 16:06:37,854 INFO L226 Difference]: Without dead ends: 89 [2020-10-12 16:06:37,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:06:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-12 16:06:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 48. [2020-10-12 16:06:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 16:06:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-12 16:06:37,860 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 17 [2020-10-12 16:06:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:37,861 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-12 16:06:37,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:06:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-12 16:06:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 16:06:37,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:37,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:37,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 16:06:37,862 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:37,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2022080917, now seen corresponding path program 1 times [2020-10-12 16:06:37,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:37,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79778085] [2020-10-12 16:06:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:37,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 16:06:37,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:06:37,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 16:06:37,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:06:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 16:06:37,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 16:06:37,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:37,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:37,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:37,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:37,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:37,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:37,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:06:37,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:37,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:37,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79778085] [2020-10-12 16:06:37,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:37,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:06:37,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381783476] [2020-10-12 16:06:37,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:06:37,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:37,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:06:37,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:06:37,979 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-10-12 16:06:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:38,137 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-12 16:06:38,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:06:38,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-12 16:06:38,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:38,139 INFO L225 Difference]: With dead ends: 73 [2020-10-12 16:06:38,139 INFO L226 Difference]: Without dead ends: 71 [2020-10-12 16:06:38,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 16:06:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-12 16:06:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 46. [2020-10-12 16:06:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 16:06:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-12 16:06:38,144 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 17 [2020-10-12 16:06:38,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:38,145 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-12 16:06:38,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:06:38,145 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-12 16:06:38,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 16:06:38,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:38,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:38,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 16:06:38,146 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:38,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:38,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1740004142, now seen corresponding path program 1 times [2020-10-12 16:06:38,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:38,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647199701] [2020-10-12 16:06:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:38,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:38,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 16:06:38,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:38,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 16:06:38,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:06:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:06:38,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:06:38,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:38,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:38,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:38,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:06:38,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:38,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:38,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:38,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647199701] [2020-10-12 16:06:38,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:38,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:06:38,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647006259] [2020-10-12 16:06:38,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:06:38,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:38,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:06:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:06:38,263 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 6 states. [2020-10-12 16:06:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:38,400 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-10-12 16:06:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:06:38,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-12 16:06:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:38,401 INFO L225 Difference]: With dead ends: 61 [2020-10-12 16:06:38,402 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 16:06:38,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:06:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 16:06:38,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 44. [2020-10-12 16:06:38,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-12 16:06:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-12 16:06:38,411 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 18 [2020-10-12 16:06:38,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:38,413 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-12 16:06:38,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:06:38,414 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-12 16:06:38,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 16:06:38,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:38,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:38,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 16:06:38,415 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:38,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1894443311, now seen corresponding path program 1 times [2020-10-12 16:06:38,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:38,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019012264] [2020-10-12 16:06:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:38,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:38,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 16:06:38,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:38,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 16:06:38,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:06:38,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 16:06:38,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:06:38,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:38,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:38,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:38,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:38,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:06:38,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:06:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:38,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019012264] [2020-10-12 16:06:38,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:38,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:06:38,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678102801] [2020-10-12 16:06:38,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:06:38,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:38,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:06:38,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:06:38,520 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2020-10-12 16:06:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:38,606 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-10-12 16:06:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:06:38,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-12 16:06:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:38,607 INFO L225 Difference]: With dead ends: 61 [2020-10-12 16:06:38,608 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 16:06:38,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:06:38,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 16:06:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2020-10-12 16:06:38,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-12 16:06:38,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-12 16:06:38,615 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 19 [2020-10-12 16:06:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:38,615 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-12 16:06:38,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:06:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-12 16:06:38,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:06:38,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:38,616 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] [2020-10-12 16:06:38,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 16:06:38,618 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:38,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:38,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1401802644, now seen corresponding path program 1 times [2020-10-12 16:06:38,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:38,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204657057] [2020-10-12 16:06:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:38,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:38,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 16:06:38,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 16:06:38,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:06:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 16:06:38,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:06:38,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:38,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:38,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:38,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:38,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:38,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:06:38,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:38,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:38,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:38,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:38,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204657057] [2020-10-12 16:06:38,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:38,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:06:38,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629352217] [2020-10-12 16:06:38,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:06:38,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:38,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:06:38,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:06:38,733 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-10-12 16:06:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:38,876 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-12 16:06:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:06:38,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 16:06:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:38,878 INFO L225 Difference]: With dead ends: 69 [2020-10-12 16:06:38,878 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 16:06:38,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:06:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 16:06:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 40. [2020-10-12 16:06:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 16:06:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-12 16:06:38,887 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-10-12 16:06:38,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:38,887 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-12 16:06:38,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:06:38,887 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-12 16:06:38,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 16:06:38,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:38,889 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] [2020-10-12 16:06:38,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 16:06:38,890 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:38,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:38,890 INFO L82 PathProgramCache]: Analyzing trace with hash 506212151, now seen corresponding path program 1 times [2020-10-12 16:06:38,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:38,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335910668] [2020-10-12 16:06:38,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:38,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:39,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:39,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 16:06:39,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:06:39,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-12 16:06:39,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:06:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 16:06:39,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:06:39,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:06:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:39,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:39,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:39,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:39,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:06:39,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:39,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335910668] [2020-10-12 16:06:39,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:39,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:06:39,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932101580] [2020-10-12 16:06:39,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:06:39,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:39,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:06:39,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:06:39,334 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 7 states. [2020-10-12 16:06:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:39,486 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2020-10-12 16:06:39,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 16:06:39,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-12 16:06:39,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:39,487 INFO L225 Difference]: With dead ends: 74 [2020-10-12 16:06:39,487 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 16:06:39,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:06:39,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 16:06:39,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 38. [2020-10-12 16:06:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 16:06:39,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-12 16:06:39,493 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 21 [2020-10-12 16:06:39,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:39,494 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-12 16:06:39,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:06:39,494 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-12 16:06:39,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 16:06:39,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:39,495 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] [2020-10-12 16:06:39,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 16:06:39,496 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:39,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:39,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1487289350, now seen corresponding path program 1 times [2020-10-12 16:06:39,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:39,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959904059] [2020-10-12 16:06:39,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:39,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:39,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:39,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:06:39,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:39,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-12 16:06:39,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:06:39,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:06:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 16:06:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:39,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:39,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:39,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:39,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:39,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:06:39,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:39,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:39,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959904059] [2020-10-12 16:06:39,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:39,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:06:39,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859634688] [2020-10-12 16:06:39,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:06:39,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:39,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:06:39,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:06:39,633 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 7 states. [2020-10-12 16:06:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:39,815 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2020-10-12 16:06:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:06:39,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-12 16:06:39,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:39,817 INFO L225 Difference]: With dead ends: 62 [2020-10-12 16:06:39,817 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 16:06:39,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:06:39,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 16:06:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 36. [2020-10-12 16:06:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-12 16:06:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-12 16:06:39,822 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2020-10-12 16:06:39,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:39,822 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-12 16:06:39,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:06:39,823 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-12 16:06:39,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 16:06:39,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:39,823 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] [2020-10-12 16:06:39,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 16:06:39,824 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:39,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:39,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1138673565, now seen corresponding path program 1 times [2020-10-12 16:06:39,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:39,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657226703] [2020-10-12 16:06:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:39,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:39,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:39,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:39,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 16:06:39,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:06:39,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 16:06:39,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:06:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 16:06:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 16:06:39,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:39,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:39,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:39,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:39,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:06:39,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:39,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:39,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:39,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:39,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657226703] [2020-10-12 16:06:39,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:39,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:06:39,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683223890] [2020-10-12 16:06:39,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:06:39,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:39,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:06:39,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:06:39,983 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 6 states. [2020-10-12 16:06:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:40,151 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-12 16:06:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:06:40,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-12 16:06:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:40,152 INFO L225 Difference]: With dead ends: 73 [2020-10-12 16:06:40,152 INFO L226 Difference]: Without dead ends: 71 [2020-10-12 16:06:40,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:06:40,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-12 16:06:40,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 34. [2020-10-12 16:06:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 16:06:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-12 16:06:40,157 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2020-10-12 16:06:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:40,158 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-12 16:06:40,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:06:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-12 16:06:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-12 16:06:40,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:40,159 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] [2020-10-12 16:06:40,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 16:06:40,159 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:40,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:40,160 INFO L82 PathProgramCache]: Analyzing trace with hash 939145312, now seen corresponding path program 1 times [2020-10-12 16:06:40,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:40,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167177877] [2020-10-12 16:06:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:40,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:40,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 16:06:40,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:40,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 16:06:40,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:06:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 16:06:40,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:06:40,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:40,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:40,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:40,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:40,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:40,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:06:40,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:40,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:40,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167177877] [2020-10-12 16:06:40,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:40,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:06:40,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763676731] [2020-10-12 16:06:40,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:06:40,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:06:40,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:06:40,274 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-10-12 16:06:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:40,445 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-12 16:06:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:06:40,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-12 16:06:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:40,447 INFO L225 Difference]: With dead ends: 60 [2020-10-12 16:06:40,447 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 16:06:40,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:06:40,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 16:06:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 32. [2020-10-12 16:06:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 16:06:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-12 16:06:40,452 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2020-10-12 16:06:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:40,452 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-12 16:06:40,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:06:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-12 16:06:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 16:06:40,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:06:40,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:06:40,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 16:06:40,454 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:06:40,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:06:40,454 INFO L82 PathProgramCache]: Analyzing trace with hash -951263229, now seen corresponding path program 1 times [2020-10-12 16:06:40,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:06:40,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1124065060] [2020-10-12 16:06:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:06:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:40,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:40,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:40,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:40,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 16:06:40,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:06:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 16:06:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 16:06:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 16:06:40,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 16:06:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:40,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:06:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:06:40,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:06:40,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:06:40,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:06:40,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:06:40,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:06:40,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:06:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:06:40,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:06:40,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:06:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:06:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:06:40,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1124065060] [2020-10-12 16:06:40,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:06:40,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:06:40,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168901512] [2020-10-12 16:06:40,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:06:40,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:06:40,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:06:40,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:06:40,733 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2020-10-12 16:06:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:06:41,044 INFO L93 Difference]: Finished difference Result 125 states and 147 transitions. [2020-10-12 16:06:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 16:06:41,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-12 16:06:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:06:41,045 INFO L225 Difference]: With dead ends: 125 [2020-10-12 16:06:41,045 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:06:41,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:06:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:06:41,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:06:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:06:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:06:41,048 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-12 16:06:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:06:41,048 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:06:41,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:06:41,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:06:41,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:06:41,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 16:06:41,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:06:41,334 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 99 [2020-10-12 16:06:41,463 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 73 [2020-10-12 16:06:41,698 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 85 [2020-10-12 16:06:42,096 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 38 [2020-10-12 16:06:42,277 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 21 [2020-10-12 16:06:42,560 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 13 [2020-10-12 16:06:42,564 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:06:42,564 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_334~0 |old(~__return_334~0)|) (= ~__return_main~0 |old(~__return_main~0)|)) [2020-10-12 16:06:42,564 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:06:42,564 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:06:42,565 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:06:42,565 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:06:42,565 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:06:42,565 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:06:42,565 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-12 16:06:42,565 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:06:42,565 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:06:42,565 INFO L268 CegarLoopResult]: For program point L225(lines 225 267) no Hoare annotation was computed. [2020-10-12 16:06:42,565 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 86) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 311) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 203) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point L201(lines 201 271) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point L36(lines 36 292) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 139) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-10-12 16:06:42,566 INFO L268 CegarLoopResult]: For program point L243(line 243) no Hoare annotation was computed. [2020-10-12 16:06:42,567 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-10-12 16:06:42,567 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 243) no Hoare annotation was computed. [2020-10-12 16:06:42,567 INFO L268 CegarLoopResult]: For program point L227(line 227) no Hoare annotation was computed. [2020-10-12 16:06:42,567 INFO L268 CegarLoopResult]: For program point L161(lines 161 277) no Hoare annotation was computed. [2020-10-12 16:06:42,567 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 110) no Hoare annotation was computed. [2020-10-12 16:06:42,567 INFO L264 CegarLoopResult]: At program point L302(lines 23 310) the Hoare annotation is: (and (<= 0 main_~main__i~0) (<= (+ main_~main__limit~0 4) main_~main__bufsize~0) (= |old(~__return_334~0)| ~__return_334~0)) [2020-10-12 16:06:42,567 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 311) no Hoare annotation was computed. [2020-10-12 16:06:42,567 INFO L268 CegarLoopResult]: For program point L203(line 203) no Hoare annotation was computed. [2020-10-12 16:06:42,568 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 227) no Hoare annotation was computed. [2020-10-12 16:06:42,568 INFO L268 CegarLoopResult]: For program point L137(lines 137 281) no Hoare annotation was computed. [2020-10-12 16:06:42,568 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2020-10-12 16:06:42,568 INFO L268 CegarLoopResult]: For program point L96(lines 96 123) no Hoare annotation was computed. [2020-10-12 16:06:42,568 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 311) the Hoare annotation is: (= |old(~__return_334~0)| ~__return_334~0) [2020-10-12 16:06:42,568 INFO L268 CegarLoopResult]: For program point L253(lines 253 263) no Hoare annotation was computed. [2020-10-12 16:06:42,568 INFO L268 CegarLoopResult]: For program point L55(lines 55 284) no Hoare annotation was computed. [2020-10-12 16:06:42,568 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 163) no Hoare annotation was computed. [2020-10-12 16:06:42,568 INFO L268 CegarLoopResult]: For program point L72(lines 72 127) no Hoare annotation was computed. [2020-10-12 16:06:42,571 INFO L264 CegarLoopResult]: At program point L262(lines 29 304) the Hoare annotation is: (let ((.cse4 (<= 0 main_~main__j~0)) (.cse2 (<= (+ main_~main__limit~0 4) main_~main__bufsize~0)) (.cse1 (= |old(~__return_334~0)| ~__return_334~0))) (or (and (<= 1 main_~main__j~0) (let ((.cse3 (<= (+ main_~main__j~0 4) main_~main__bufsize~0))) (let ((.cse0 (let ((.cse5 (<= 1 main_~main__i~0))) (or (and .cse4 .cse3 .cse5) (and .cse4 .cse5 (<= 1 main_~__VERIFIER_assert__cond~12)))))) (or (and .cse0 (not (= main_~__VERIFIER_assert__cond~14 0)) .cse1 .cse2) (and .cse0 .cse3 .cse1 .cse2))))) (and (<= 0 main_~main__i~0) .cse4 (< main_~main__i~0 main_~main__len~0) .cse2 .cse1))) [2020-10-12 16:06:42,571 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-10-12 16:06:42,571 INFO L268 CegarLoopResult]: For program point L64(lines 64 283) no Hoare annotation was computed. [2020-10-12 16:06:42,571 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 151) no Hoare annotation was computed. [2020-10-12 16:06:42,571 INFO L268 CegarLoopResult]: For program point L213(lines 213 269) no Hoare annotation was computed. [2020-10-12 16:06:42,573 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-10-12 16:06:42,573 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-10-12 16:06:42,573 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-10-12 16:06:42,573 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2020-10-12 16:06:42,573 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-10-12 16:06:42,573 INFO L268 CegarLoopResult]: For program point L189(lines 189 273) no Hoare annotation was computed. [2020-10-12 16:06:42,573 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-10-12 16:06:42,573 INFO L268 CegarLoopResult]: For program point L173(lines 173 275) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 191) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point L215(line 215) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point L149(lines 149 279) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point L108(lines 108 121) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point L34(lines 34 298) no Hoare annotation was computed. [2020-10-12 16:06:42,574 INFO L268 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-10-12 16:06:42,575 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 98) no Hoare annotation was computed. [2020-10-12 16:06:42,575 INFO L268 CegarLoopResult]: For program point L84(lines 84 125) no Hoare annotation was computed. [2020-10-12 16:06:42,575 INFO L268 CegarLoopResult]: For program point L18(lines 18 310) no Hoare annotation was computed. [2020-10-12 16:06:42,575 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 215) no Hoare annotation was computed. [2020-10-12 16:06:42,575 INFO L268 CegarLoopResult]: For program point L241(lines 241 265) no Hoare annotation was computed. [2020-10-12 16:06:42,575 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-10-12 16:06:42,575 INFO L268 CegarLoopResult]: For program point L43(lines 43 286) no Hoare annotation was computed. [2020-10-12 16:06:42,575 INFO L264 CegarLoopResult]: At program point L291(lines 36 292) the Hoare annotation is: (and (<= 0 main_~main__i~0) (< main_~main__i~0 main_~main__len~0) (<= 0 main_~main__j~0) (<= (+ main_~main__j~0 5) main_~main__bufsize~0) (= |old(~__return_334~0)| ~__return_334~0) (<= (+ main_~main__limit~0 4) main_~main__bufsize~0)) [2020-10-12 16:06:42,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:06:42 BoogieIcfgContainer [2020-10-12 16:06:42,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:06:42,625 INFO L168 Benchmark]: Toolchain (without parser) took 8133.58 ms. Allocated memory was 144.2 MB in the beginning and 325.1 MB in the end (delta: 180.9 MB). Free memory was 99.4 MB in the beginning and 237.9 MB in the end (delta: -138.5 MB). Peak memory consumption was 190.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:06:42,626 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 16:06:42,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.53 ms. Allocated memory is still 144.2 MB. Free memory was 99.2 MB in the beginning and 86.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-10-12 16:06:42,630 INFO L168 Benchmark]: Boogie Preprocessor took 148.29 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 86.9 MB in the beginning and 178.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-12 16:06:42,631 INFO L168 Benchmark]: RCFGBuilder took 418.61 ms. Allocated memory is still 200.3 MB. Free memory was 178.0 MB in the beginning and 154.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:06:42,633 INFO L168 Benchmark]: TraceAbstraction took 7256.09 ms. Allocated memory was 200.3 MB in the beginning and 325.1 MB in the end (delta: 124.8 MB). Free memory was 154.9 MB in the beginning and 237.9 MB in the end (delta: -83.0 MB). Peak memory consumption was 189.8 MB. Max. memory is 7.1 GB. [2020-10-12 16:06:42,636 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.2 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.53 ms. Allocated memory is still 144.2 MB. Free memory was 99.2 MB in the beginning and 86.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.29 ms. Allocated memory was 144.2 MB in the beginning and 200.3 MB in the end (delta: 56.1 MB). Free memory was 86.9 MB in the beginning and 178.0 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 418.61 ms. Allocated memory is still 200.3 MB. Free memory was 178.0 MB in the beginning and 154.9 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7256.09 ms. Allocated memory was 200.3 MB in the beginning and 325.1 MB in the end (delta: 124.8 MB). Free memory was 154.9 MB in the beginning and 237.9 MB in the end (delta: -83.0 MB). Peak memory consumption was 189.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 255]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 151]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 163]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 227]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 191]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 243]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 215]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 98]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 203]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 74]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 139]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 110]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 86]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 57]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (1 <= main__j && (((((((0 <= main__j && main__j + 4 <= main__bufsize) && 1 <= main__i) || ((0 <= main__j && 1 <= main__i) && 1 <= __VERIFIER_assert__cond)) && !(__VERIFIER_assert__cond == 0)) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize) || ((((((0 <= main__j && main__j + 4 <= main__bufsize) && 1 <= main__i) || ((0 <= main__j && 1 <= main__i) && 1 <= __VERIFIER_assert__cond)) && main__j + 4 <= main__bufsize) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize))) || ((((0 <= main__i && 0 <= main__j) && main__i < main__len) && main__limit + 4 <= main__bufsize) && \old(__return_334) == __return_334) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((0 <= main__i && main__i < main__len) && 0 <= main__j) && main__j + 5 <= main__bufsize) && \old(__return_334) == __return_334) && main__limit + 4 <= main__bufsize - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (0 <= main__i && main__limit + 4 <= main__bufsize) && \old(__return_334) == __return_334 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 924 SDtfs, 1947 SDslu, 237 SDs, 0 SdLazy, 1400 SolverSat, 170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, 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, 16 MinimizatonAttempts, 421 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 26 NumberOfFragments, 144 HoareAnnotationTreeSize, 7 FomulaSimplifications, 710762155 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 7 FomulaSimplificationsInter, 377655 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 278 ConstructedInterpolants, 0 QuantifiedInterpolants, 14102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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...