/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:01,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:01,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:01,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:01,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:01,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:01,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:01,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:01,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:01,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:01,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:01,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:01,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:01,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:01,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:01,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:01,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:01,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:01,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:01,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:01,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:01,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:01,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:01,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:01,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:01,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:01,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:01,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:01,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:01,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:01,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:01,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:01,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:01,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:01,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:01,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:01,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:01,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:01,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:01,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:01,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:01,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:22:01,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:01,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:01,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:01,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:01,194 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:01,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:01,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:01,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:01,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:01,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:01,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:01,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:01,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:01,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:01,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:01,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:01,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:01,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:01,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:01,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:01,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:01,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:01,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:01,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:01,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:01,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:01,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:01,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:01,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:01,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:22:01,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:01,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:01,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:01,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:01,704 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:01,705 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 12:22:01,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d68268da7/3b96f7bb9b3f4c6988bb86344ab1c5e1/FLAG90b5b6535 [2020-09-25 12:22:02,431 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:02,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-09-25 12:22:02,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d68268da7/3b96f7bb9b3f4c6988bb86344ab1c5e1/FLAG90b5b6535 [2020-09-25 12:22:02,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d68268da7/3b96f7bb9b3f4c6988bb86344ab1c5e1 [2020-09-25 12:22:02,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:02,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:02,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:02,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:02,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:02,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:02" (1/1) ... [2020-09-25 12:22:02,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:02, skipping insertion in model container [2020-09-25 12:22:02,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:02" (1/1) ... [2020-09-25 12:22:02,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:02,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:03,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:03,225 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:03,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:03,469 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:03,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03 WrapperNode [2020-09-25 12:22:03,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:03,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:03,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:03,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:03,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... [2020-09-25 12:22:03,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:03,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:03,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:03,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:03,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:03,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:03,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:03,725 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:03,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:03,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:05,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:05,141 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:05,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:05 BoogieIcfgContainer [2020-09-25 12:22:05,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:05,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:05,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:05,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:02" (1/3) ... [2020-09-25 12:22:05,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:05, skipping insertion in model container [2020-09-25 12:22:05,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:03" (2/3) ... [2020-09-25 12:22:05,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:05, skipping insertion in model container [2020-09-25 12:22:05,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:05" (3/3) ... [2020-09-25 12:22:05,172 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-09-25 12:22:05,184 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:05,203 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:05,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:05,271 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:05,272 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:05,272 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:05,272 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:05,272 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:05,272 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:05,272 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:05,272 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 12:22:05,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:05,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:05,331 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1333625535, now seen corresponding path program 1 times [2020-09-25 12:22:05,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:05,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 12:22:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:08,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:10,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 12:22:10,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:10,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:22:10,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:10,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:10,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:22:10,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-09-25 12:22:10,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:22:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:10,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:10,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:10,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:10,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:10,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:22:10,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:10,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:10,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:10,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:22:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:11,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 12:22:11,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:11,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:22:11,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585548140] [2020-09-25 12:22:11,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:11,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:11,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:11,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:11,054 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 12:22:13,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:13,989 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 12:22:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:22:13,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 12:22:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:14,025 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 12:22:14,025 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 12:22:14,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:14,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 12:22:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 12:22:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 12:22:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 12:22:14,204 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 156 [2020-09-25 12:22:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:14,205 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 12:22:14,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 12:22:14,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 12:22:14,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:14,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:14,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:14,221 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash 2141714320, now seen corresponding path program 1 times [2020-09-25 12:22:14,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:14,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718011844] [2020-09-25 12:22:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:14,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:19,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 12:22:19,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:22:19,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:19,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:19,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:22:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 12:22:19,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:22:19,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:19,734 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 33 [2020-09-25 12:22:19,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:19,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:19,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:19,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:19,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:22:19,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:19,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:19,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:19,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:19,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:19,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:19,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:19,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:19,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 12:22:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:19,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:22:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:19,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:22:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:20,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718011844] [2020-09-25 12:22:20,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:20,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:22:20,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201337935] [2020-09-25 12:22:20,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:22:20,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:20,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:22:20,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:22:20,303 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 9 states. [2020-09-25 12:22:21,066 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-09-25 12:22:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:25,523 INFO L93 Difference]: Finished difference Result 2190 states and 2883 transitions. [2020-09-25 12:22:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:22:25,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2020-09-25 12:22:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:25,536 INFO L225 Difference]: With dead ends: 2190 [2020-09-25 12:22:25,536 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 12:22:25,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:22:25,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 12:22:25,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1019. [2020-09-25 12:22:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-09-25 12:22:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1208 transitions. [2020-09-25 12:22:25,607 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1208 transitions. Word has length 177 [2020-09-25 12:22:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:25,608 INFO L479 AbstractCegarLoop]: Abstraction has 1019 states and 1208 transitions. [2020-09-25 12:22:25,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:22:25,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1208 transitions. [2020-09-25 12:22:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 12:22:25,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:25,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:25,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:25,617 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:25,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1934583001, now seen corresponding path program 1 times [2020-09-25 12:22:25,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:25,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261311389] [2020-09-25 12:22:25,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:27,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:28,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:30,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 12:22:30,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:22:30,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:22:30,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:30,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 12:22:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 12:22:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:30,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:30,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:30,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:30,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:30,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:30,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:30,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:30,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:30,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:30,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:22:30,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:30,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:22:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:30,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261311389] [2020-09-25 12:22:30,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:30,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:30,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541349764] [2020-09-25 12:22:30,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:30,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:30,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:30,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:30,908 INFO L87 Difference]: Start difference. First operand 1019 states and 1208 transitions. Second operand 5 states. [2020-09-25 12:22:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:32,880 INFO L93 Difference]: Finished difference Result 2643 states and 3240 transitions. [2020-09-25 12:22:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:32,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 12:22:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:32,893 INFO L225 Difference]: With dead ends: 2643 [2020-09-25 12:22:32,893 INFO L226 Difference]: Without dead ends: 1648 [2020-09-25 12:22:32,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2020-09-25 12:22:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1309. [2020-09-25 12:22:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-09-25 12:22:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1588 transitions. [2020-09-25 12:22:32,965 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1588 transitions. Word has length 181 [2020-09-25 12:22:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:32,967 INFO L479 AbstractCegarLoop]: Abstraction has 1309 states and 1588 transitions. [2020-09-25 12:22:32,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1588 transitions. [2020-09-25 12:22:32,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 12:22:32,985 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:32,985 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:32,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:32,986 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:32,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:32,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1135760175, now seen corresponding path program 1 times [2020-09-25 12:22:32,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:32,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361625461] [2020-09-25 12:22:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:33,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:33,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:38,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 12:22:38,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:22:38,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:22:38,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:38,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:22:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-09-25 12:22:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:22:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:38,567 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2020-09-25 12:22:38,727 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-09-25 12:22:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:39,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:39,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:39,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:39,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:22:39,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:39,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:39,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:39,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:39,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:39,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:39,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:39,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:22:39,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:39,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:39,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 12:22:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:39,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:22:39,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:39,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 12:22:39,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:39,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:39,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:22:39,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:39,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:22:39,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 12:22:39,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361625461] [2020-09-25 12:22:39,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:39,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:22:39,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695595668] [2020-09-25 12:22:39,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:22:39,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:39,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:22:39,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:22:39,638 INFO L87 Difference]: Start difference. First operand 1309 states and 1588 transitions. Second operand 16 states. [2020-09-25 12:22:41,790 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 12:22:42,042 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-25 12:22:42,333 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 12:22:42,848 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 12:22:43,218 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2020-09-25 12:22:43,363 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 12:22:43,552 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-09-25 12:22:44,129 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2020-09-25 12:22:44,797 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2020-09-25 12:22:45,293 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 103 [2020-09-25 12:22:45,669 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 12:22:46,240 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 91 [2020-09-25 12:22:46,800 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 98 [2020-09-25 12:22:47,136 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-09-25 12:22:47,413 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2020-09-25 12:22:48,088 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-09-25 12:22:48,462 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2020-09-25 12:22:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:49,559 INFO L93 Difference]: Finished difference Result 3324 states and 4216 transitions. [2020-09-25 12:22:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 12:22:49,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 222 [2020-09-25 12:22:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:49,578 INFO L225 Difference]: With dead ends: 3324 [2020-09-25 12:22:49,578 INFO L226 Difference]: Without dead ends: 2039 [2020-09-25 12:22:49,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=482, Invalid=1078, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 12:22:49,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2020-09-25 12:22:49,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1835. [2020-09-25 12:22:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2020-09-25 12:22:49,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2201 transitions. [2020-09-25 12:22:49,684 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2201 transitions. Word has length 222 [2020-09-25 12:22:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:49,685 INFO L479 AbstractCegarLoop]: Abstraction has 1835 states and 2201 transitions. [2020-09-25 12:22:49,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:22:49,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2201 transitions. [2020-09-25 12:22:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-09-25 12:22:49,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:49,701 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:22:49,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:49,702 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:49,703 INFO L82 PathProgramCache]: Analyzing trace with hash -828806245, now seen corresponding path program 1 times [2020-09-25 12:22:49,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:49,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227020638] [2020-09-25 12:22:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking...