/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/eca-rers2012/Problem17_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:50:07,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:50:07,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:50:08,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:50:08,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:50:08,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:50:08,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:50:08,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:50:08,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:50:08,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:50:08,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:50:08,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:50:08,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:50:08,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:50:08,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:50:08,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:50:08,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:50:08,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:50:08,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:50:08,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:50:08,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:50:08,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:50:08,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:50:08,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:50:08,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:50:08,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:50:08,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:50:08,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:50:08,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:50:08,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:50:08,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:50:08,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:50:08,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:50:08,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:50:08,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:50:08,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:50:08,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:50:08,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:50:08,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:50:08,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:50:08,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:50:08,098 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 14:50:08,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:50:08,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:50:08,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:50:08,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:50:08,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:50:08,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:50:08,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:50:08,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:50:08,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:50:08,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:50:08,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:50:08,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:50:08,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:50:08,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:50:08,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:50:08,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:50:08,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:50:08,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:50:08,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:50:08,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:50:08,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:50:08,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:50:08,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:50:08,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:50:08,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:50:08,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:50:08,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:50:08,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:50:08,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:50:08,137 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 14:50:08,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:50:08,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:50:08,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:50:08,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:50:08,500 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:50:08,500 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label49.c [2020-10-12 14:50:08,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4db4713/ef4e4865169042af901608ac79fb94b3/FLAGdbf9951bf [2020-10-12 14:50:09,276 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:50:09,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label49.c [2020-10-12 14:50:09,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4db4713/ef4e4865169042af901608ac79fb94b3/FLAGdbf9951bf [2020-10-12 14:50:09,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef4db4713/ef4e4865169042af901608ac79fb94b3 [2020-10-12 14:50:09,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:50:09,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:50:09,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:50:09,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:50:09,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:50:09,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:50:09" (1/1) ... [2020-10-12 14:50:09,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bbd1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:09, skipping insertion in model container [2020-10-12 14:50:09,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:50:09" (1/1) ... [2020-10-12 14:50:09,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:50:09,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:50:10,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:50:10,879 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:50:11,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:50:11,419 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:50:11,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11 WrapperNode [2020-10-12 14:50:11,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:50:11,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:50:11,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:50:11,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:50:11,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (1/1) ... [2020-10-12 14:50:11,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (1/1) ... [2020-10-12 14:50:11,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (1/1) ... [2020-10-12 14:50:11,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (1/1) ... [2020-10-12 14:50:11,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (1/1) ... [2020-10-12 14:50:11,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (1/1) ... [2020-10-12 14:50:11,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (1/1) ... [2020-10-12 14:50:11,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:50:11,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:50:11,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:50:11,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:50:11,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (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 14:50:11,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:50:11,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:50:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:50:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:50:11,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:50:11,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:50:11,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:50:11,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:50:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:50:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:50:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:50:11,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:50:11,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:50:21,144 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:50:21,144 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:50:21,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:50:21 BoogieIcfgContainer [2020-10-12 14:50:21,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:50:21,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:50:21,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:50:21,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:50:21,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:50:09" (1/3) ... [2020-10-12 14:50:21,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106bc74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:50:21, skipping insertion in model container [2020-10-12 14:50:21,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:50:11" (2/3) ... [2020-10-12 14:50:21,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106bc74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:50:21, skipping insertion in model container [2020-10-12 14:50:21,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:50:21" (3/3) ... [2020-10-12 14:50:21,163 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label49.c [2020-10-12 14:50:21,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:50:21,183 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:50:21,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:50:21,228 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:50:21,228 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:50:21,228 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:50:21,229 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:50:21,229 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:50:21,229 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:50:21,229 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:50:21,229 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:50:21,265 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:50:21,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 14:50:21,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:50:21,274 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 14:50:21,274 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:50:21,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:50:21,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1643264031, now seen corresponding path program 1 times [2020-10-12 14:50:21,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:50:21,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928676609] [2020-10-12 14:50:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:50:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:21,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:21,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:21,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 14:50:21,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:21,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-12 14:50:21,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:21,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:50:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:50:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 14:50:21,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:50:22,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:50:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:22,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:22,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:50:22,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:22,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 14:50:22,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:50:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:50:22,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:50:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:50:22,042 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 14:50:22,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928676609] [2020-10-12 14:50:22,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:50:22,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:50:22,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550659658] [2020-10-12 14:50:22,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:50:22,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:50:22,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:50:22,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:50:22,072 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-12 14:50:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:50:33,495 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-12 14:50:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:50:33,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 14:50:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:50:33,530 INFO L225 Difference]: With dead ends: 1689 [2020-10-12 14:50:33,530 INFO L226 Difference]: Without dead ends: 1009 [2020-10-12 14:50:33,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:50:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-12 14:50:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-12 14:50:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-12 14:50:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-12 14:50:33,708 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 21 [2020-10-12 14:50:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:50:33,710 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-12 14:50:33,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:50:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-12 14:50:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 14:50:33,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:50:33,720 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:50:33,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:50:33,721 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:50:33,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:50:33,721 INFO L82 PathProgramCache]: Analyzing trace with hash -575527753, now seen corresponding path program 1 times [2020-10-12 14:50:33,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:50:33,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589923501] [2020-10-12 14:50:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:50:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:33,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:35,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:35,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 14:50:35,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:50:35,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1371 [2020-10-12 14:50:35,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:50:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:50:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 14:50:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:50:35,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:50:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:35,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:50:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:50:35,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:35,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:50:35,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:50:35,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:50:35,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 14:50:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:50:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:35,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:50:35,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-12 14:50:35,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:50:35,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:50:35,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:50:35,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:50:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:50:35,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589923501] [2020-10-12 14:50:35,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:50:35,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 14:50:35,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401671409] [2020-10-12 14:50:35,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:50:35,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:50:35,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:50:35,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:50:35,750 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 7 states. [2020-10-12 14:50:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:50:54,469 INFO L93 Difference]: Finished difference Result 2463 states and 3910 transitions. [2020-10-12 14:50:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:50:54,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-12 14:50:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:50:54,479 INFO L225 Difference]: With dead ends: 2463 [2020-10-12 14:50:54,480 INFO L226 Difference]: Without dead ends: 1478 [2020-10-12 14:50:54,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:50:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-10-12 14:50:54,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1440. [2020-10-12 14:50:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2020-10-12 14:50:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 1869 transitions. [2020-10-12 14:50:54,538 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 1869 transitions. Word has length 92 [2020-10-12 14:50:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:50:54,538 INFO L479 AbstractCegarLoop]: Abstraction has 1440 states and 1869 transitions. [2020-10-12 14:50:54,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:50:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 1869 transitions. [2020-10-12 14:50:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 14:50:54,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:50:54,542 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 14:50:54,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:50:54,542 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:50:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:50:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash -853153015, now seen corresponding path program 1 times [2020-10-12 14:50:54,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:50:54,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969195372] [2020-10-12 14:50:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:50:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:54,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:55,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:55,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 14:50:55,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:55,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-12 14:50:55,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:55,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:50:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:50:55,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 14:50:55,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:50:55,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:50:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:55,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:55,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:55,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:50:55,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:55,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:50:55,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:50:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:50:55,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:50:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:50:55,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:50:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:50:55,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:50:55,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:50:55,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:50:55,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:50:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-12 14:50:55,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:50:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:50:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:50:55,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:50:55,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:50:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:50:55,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969195372] [2020-10-12 14:50:55,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:50:55,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:50:55,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204025784] [2020-10-12 14:50:55,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:50:55,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:50:55,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:50:55,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:50:55,724 INFO L87 Difference]: Start difference. First operand 1440 states and 1869 transitions. Second operand 8 states. [2020-10-12 14:51:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:14,775 INFO L93 Difference]: Finished difference Result 3422 states and 4742 transitions. [2020-10-12 14:51:14,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:51:14,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-12 14:51:14,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:14,799 INFO L225 Difference]: With dead ends: 3422 [2020-10-12 14:51:14,799 INFO L226 Difference]: Without dead ends: 1973 [2020-10-12 14:51:14,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:51:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2020-10-12 14:51:14,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1917. [2020-10-12 14:51:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2020-10-12 14:51:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2402 transitions. [2020-10-12 14:51:14,903 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2402 transitions. Word has length 95 [2020-10-12 14:51:14,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:14,904 INFO L479 AbstractCegarLoop]: Abstraction has 1917 states and 2402 transitions. [2020-10-12 14:51:14,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:51:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2402 transitions. [2020-10-12 14:51:14,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-12 14:51:14,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:14,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 14:51:14,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:51:14,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:14,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:14,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1772486461, now seen corresponding path program 1 times [2020-10-12 14:51:14,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:14,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640263612] [2020-10-12 14:51:14,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:15,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:15,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:16,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:16,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-12 14:51:16,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:51:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1503 [2020-10-12 14:51:16,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-12 14:51:16,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 14:51:16,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:16,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:16,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:16,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:16,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 14:51:16,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:51:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:51:16,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:16,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:16,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:51:16,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:16,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 14:51:16,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:16,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:51:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:16,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:51:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:16,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:51:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:16,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:16,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:51:16,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:16,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 14:51:16,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 14:51:16,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-12 14:51:16,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640263612] [2020-10-12 14:51:16,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:51:16,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:51:16,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164115791] [2020-10-12 14:51:16,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:51:16,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:16,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:51:16,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:51:16,867 INFO L87 Difference]: Start difference. First operand 1917 states and 2402 transitions. Second operand 5 states. [2020-10-12 14:51:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:32,183 INFO L93 Difference]: Finished difference Result 4287 states and 5713 transitions. [2020-10-12 14:51:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:51:32,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-12 14:51:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:32,200 INFO L225 Difference]: With dead ends: 4287 [2020-10-12 14:51:32,200 INFO L226 Difference]: Without dead ends: 2809 [2020-10-12 14:51:32,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:51:32,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2020-10-12 14:51:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2803. [2020-10-12 14:51:32,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-10-12 14:51:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3526 transitions. [2020-10-12 14:51:32,273 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3526 transitions. Word has length 177 [2020-10-12 14:51:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:32,274 INFO L479 AbstractCegarLoop]: Abstraction has 2803 states and 3526 transitions. [2020-10-12 14:51:32,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:51:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3526 transitions. [2020-10-12 14:51:32,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 14:51:32,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:32,278 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:51:32,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:51:32,278 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:32,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:32,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1007512258, now seen corresponding path program 1 times [2020-10-12 14:51:32,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:32,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309693232] [2020-10-12 14:51:32,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:32,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:32,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:33,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:33,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 14:51:33,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:51:33,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-12 14:51:33,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:33,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:51:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:51:33,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 14:51:33,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:33,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:33,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:33,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:51:33,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:51:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:33,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:51:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:33,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:51:33,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 14:51:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:51:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:33,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:51:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:33,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:34,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:34,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:51:34,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:51:34,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 14:51:34,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:34,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:51:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 95 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:51:34,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309693232] [2020-10-12 14:51:34,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:51:34,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:51:34,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386972348] [2020-10-12 14:51:34,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:51:34,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:51:34,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:51:34,196 INFO L87 Difference]: Start difference. First operand 2803 states and 3526 transitions. Second operand 7 states. [2020-10-12 14:51:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:51:51,090 INFO L93 Difference]: Finished difference Result 5639 states and 7481 transitions. [2020-10-12 14:51:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:51:51,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-12 14:51:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:51:51,109 INFO L225 Difference]: With dead ends: 5639 [2020-10-12 14:51:51,109 INFO L226 Difference]: Without dead ends: 3275 [2020-10-12 14:51:51,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:51:51,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2020-10-12 14:51:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3259. [2020-10-12 14:51:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3259 states. [2020-10-12 14:51:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3259 states to 3259 states and 4348 transitions. [2020-10-12 14:51:51,202 INFO L78 Accepts]: Start accepts. Automaton has 3259 states and 4348 transitions. Word has length 194 [2020-10-12 14:51:51,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:51:51,203 INFO L479 AbstractCegarLoop]: Abstraction has 3259 states and 4348 transitions. [2020-10-12 14:51:51,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:51:51,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3259 states and 4348 transitions. [2020-10-12 14:51:51,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-12 14:51:51,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:51:51,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:51:51,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:51:51,209 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:51:51,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:51:51,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1464364218, now seen corresponding path program 1 times [2020-10-12 14:51:51,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:51:51,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995688688] [2020-10-12 14:51:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:51:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:52,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:53,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:53,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-12 14:51:53,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:51:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2469 [2020-10-12 14:51:53,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 14:51:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:51:53,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-12 14:51:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:53,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:51:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:53,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:53,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:53,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:51:53,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:51:53,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:51:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:51:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:51:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:53,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:51:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:54,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:51:54,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-12 14:51:54,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:51:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:51:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:51:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:54,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:54,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:51:54,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-12 14:51:54,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:54,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:54,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:54,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:51:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:51:54,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:51:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:51:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:51:54,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:51:54,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:51:54,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:51:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-12 14:51:54,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:51:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:51:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:51:54,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:51:54,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:51:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 9 proven. 180 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 14:51:54,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995688688] [2020-10-12 14:51:54,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:51:54,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:51:54,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634473730] [2020-10-12 14:51:54,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:51:54,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:51:54,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:51:54,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:51:54,733 INFO L87 Difference]: Start difference. First operand 3259 states and 4348 transitions. Second operand 9 states. [2020-10-12 14:52:17,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:17,630 INFO L93 Difference]: Finished difference Result 9851 states and 13600 transitions. [2020-10-12 14:52:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 14:52:17,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 265 [2020-10-12 14:52:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:17,667 INFO L225 Difference]: With dead ends: 9851 [2020-10-12 14:52:17,667 INFO L226 Difference]: Without dead ends: 6562 [2020-10-12 14:52:17,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-12 14:52:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2020-10-12 14:52:17,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 5547. [2020-10-12 14:52:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5547 states. [2020-10-12 14:52:17,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 7357 transitions. [2020-10-12 14:52:17,842 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 7357 transitions. Word has length 265 [2020-10-12 14:52:17,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:17,843 INFO L479 AbstractCegarLoop]: Abstraction has 5547 states and 7357 transitions. [2020-10-12 14:52:17,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:52:17,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 7357 transitions. [2020-10-12 14:52:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-12 14:52:17,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:17,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:52:17,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:52:17,851 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:17,852 INFO L82 PathProgramCache]: Analyzing trace with hash 103467206, now seen corresponding path program 1 times [2020-10-12 14:52:17,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:17,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909901823] [2020-10-12 14:52:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:18,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:18,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:21,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:21,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-12 14:52:21,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:52:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3138 [2020-10-12 14:52:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:21,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:52:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:52:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-12 14:52:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:21,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:21,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:21,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:21,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:21,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:21,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:52:21,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:21,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:21,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:21,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:21,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:21,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:21,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:21,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:21,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 14:52:21,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:21,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:52:21,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:21,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:21,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:21,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:21,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:21,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:52:21,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:52:21,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-12 14:52:21,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 14:52:21,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:52:21,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:52:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:21,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:21,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:21,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:52:21,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 14:52:21,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:21,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:52:21,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:52:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 199 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 14:52:22,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909901823] [2020-10-12 14:52:22,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:22,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:52:22,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169005049] [2020-10-12 14:52:22,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:52:22,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:22,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:52:22,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:52:22,136 INFO L87 Difference]: Start difference. First operand 5547 states and 7357 transitions. Second operand 7 states. [2020-10-12 14:52:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:52:40,758 INFO L93 Difference]: Finished difference Result 12015 states and 16552 transitions. [2020-10-12 14:52:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:52:40,760 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-12 14:52:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:52:40,791 INFO L225 Difference]: With dead ends: 12015 [2020-10-12 14:52:40,791 INFO L226 Difference]: Without dead ends: 6910 [2020-10-12 14:52:40,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:52:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6910 states. [2020-10-12 14:52:40,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6910 to 6442. [2020-10-12 14:52:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6442 states. [2020-10-12 14:52:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6442 states to 6442 states and 8685 transitions. [2020-10-12 14:52:40,985 INFO L78 Accepts]: Start accepts. Automaton has 6442 states and 8685 transitions. Word has length 271 [2020-10-12 14:52:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:52:40,986 INFO L479 AbstractCegarLoop]: Abstraction has 6442 states and 8685 transitions. [2020-10-12 14:52:40,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:52:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 6442 states and 8685 transitions. [2020-10-12 14:52:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-12 14:52:40,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:52:40,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:52:40,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:52:40,997 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:52:40,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:52:40,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1285493453, now seen corresponding path program 1 times [2020-10-12 14:52:40,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:52:40,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501728337] [2020-10-12 14:52:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:52:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:41,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:41,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:44,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-12 14:52:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:52:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3543 [2020-10-12 14:52:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:52:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-12 14:52:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 14:52:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:44,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:52:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:44,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:44,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:52:44,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:44,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:52:44,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:52:44,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:52:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:44,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:44,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:52:44,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:44,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 14:52:44,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:44,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:44,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:44,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:52:44,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:52:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:44,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:45,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:45,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 14:52:45,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:45,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-12 14:52:45,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:52:45,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:45,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:52:45,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:52:45,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 14:52:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:52:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:52:45,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:52:45,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:52:45,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:52:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-12 14:52:45,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:52:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:52:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:52:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:52:45,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:52:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-10-12 14:52:45,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501728337] [2020-10-12 14:52:45,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:52:45,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:52:45,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186925764] [2020-10-12 14:52:45,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:52:45,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:52:45,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:52:45,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:52:45,398 INFO L87 Difference]: Start difference. First operand 6442 states and 8685 transitions. Second operand 5 states. [2020-10-12 14:53:05,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:05,794 INFO L93 Difference]: Finished difference Result 15114 states and 20510 transitions. [2020-10-12 14:53:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:53:05,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-12 14:53:05,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:05,835 INFO L225 Difference]: With dead ends: 15114 [2020-10-12 14:53:05,836 INFO L226 Difference]: Without dead ends: 8661 [2020-10-12 14:53:05,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:53:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8661 states. [2020-10-12 14:53:06,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8661 to 7332. [2020-10-12 14:53:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7332 states. [2020-10-12 14:53:06,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7332 states to 7332 states and 9372 transitions. [2020-10-12 14:53:06,060 INFO L78 Accepts]: Start accepts. Automaton has 7332 states and 9372 transitions. Word has length 281 [2020-10-12 14:53:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:06,061 INFO L479 AbstractCegarLoop]: Abstraction has 7332 states and 9372 transitions. [2020-10-12 14:53:06,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:53:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand 7332 states and 9372 transitions. [2020-10-12 14:53:06,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-12 14:53:06,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:06,067 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 14:53:06,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:53:06,068 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:06,068 INFO L82 PathProgramCache]: Analyzing trace with hash 319824059, now seen corresponding path program 1 times [2020-10-12 14:53:06,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:06,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255963091] [2020-10-12 14:53:06,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:06,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-12 14:53:09,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:53:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3028 [2020-10-12 14:53:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-12 14:53:09,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 14:53:09,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:09,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:09,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:09,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:09,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:09,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:53:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:09,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:09,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:09,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:09,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 14:53:09,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:09,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:09,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:09,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:09,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:09,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 14:53:09,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:09,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 14:53:09,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:09,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:09,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:09,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 14:53:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:09,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:09,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:09,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:53:09,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:09,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 14:53:09,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:09,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:09,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:53:09,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 14:53:09,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255963091] [2020-10-12 14:53:09,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:09,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:53:09,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527500758] [2020-10-12 14:53:09,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:53:09,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:09,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:53:09,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:53:09,832 INFO L87 Difference]: Start difference. First operand 7332 states and 9372 transitions. Second operand 5 states. [2020-10-12 14:53:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:53:34,722 INFO L93 Difference]: Finished difference Result 20071 states and 26508 transitions. [2020-10-12 14:53:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:53:34,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2020-10-12 14:53:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:53:34,781 INFO L225 Difference]: With dead ends: 20071 [2020-10-12 14:53:34,782 INFO L226 Difference]: Without dead ends: 13185 [2020-10-12 14:53:34,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:53:34,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13185 states. [2020-10-12 14:53:35,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13185 to 13147. [2020-10-12 14:53:35,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13147 states. [2020-10-12 14:53:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13147 states to 13147 states and 17065 transitions. [2020-10-12 14:53:35,233 INFO L78 Accepts]: Start accepts. Automaton has 13147 states and 17065 transitions. Word has length 285 [2020-10-12 14:53:35,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:53:35,234 INFO L479 AbstractCegarLoop]: Abstraction has 13147 states and 17065 transitions. [2020-10-12 14:53:35,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:53:35,235 INFO L276 IsEmpty]: Start isEmpty. Operand 13147 states and 17065 transitions. [2020-10-12 14:53:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-12 14:53:35,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:53:35,248 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:35,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:53:35,248 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:53:35,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:53:35,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1132236588, now seen corresponding path program 1 times [2020-10-12 14:53:35,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:53:35,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521774422] [2020-10-12 14:53:35,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:53:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:35,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-12 14:53:37,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:53:37,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2331 [2020-10-12 14:53:37,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:53:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 340 [2020-10-12 14:53:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 14:53:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:37,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:53:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:53:37,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:53:37,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:53:37,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:53:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:53:37,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:37,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 14:53:37,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:37,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:37,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:37,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:53:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:37,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:37,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 14:53:37,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 14:53:37,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:37,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:53:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:53:37,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:38,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-12 14:53:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:53:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:53:38,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:53:38,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-12 14:53:38,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:53:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 14:53:38,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:53:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:53:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:53:38,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-12 14:53:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:53:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2020-10-12 14:53:38,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521774422] [2020-10-12 14:53:38,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:53:38,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:53:38,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792692879] [2020-10-12 14:53:38,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:53:38,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:53:38,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:53:38,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:53:38,423 INFO L87 Difference]: Start difference. First operand 13147 states and 17065 transitions. Second operand 6 states.