/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/Problem12_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:18:50,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:18:50,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:18:50,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:18:50,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:18:50,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:18:50,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:18:50,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:18:50,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:18:50,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:18:50,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:18:50,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:18:50,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:18:50,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:18:50,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:18:50,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:18:50,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:18:50,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:18:50,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:18:50,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:18:50,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:18:50,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:18:50,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:18:50,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:18:50,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:18:50,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:18:50,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:18:50,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:18:50,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:18:50,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:18:50,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:18:50,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:18:50,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:18:50,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:18:50,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:18:50,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:18:50,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:18:50,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:18:50,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:18:50,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:18:50,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:18:50,307 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 13:18:50,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:18:50,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:18:50,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:18:50,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:18:50,333 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:18:50,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:18:50,334 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:18:50,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:18:50,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:18:50,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:18:50,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:18:50,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:18:50,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:18:50,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:18:50,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:18:50,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:18:50,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:18:50,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:18:50,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:18:50,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:18:50,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:18:50,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:18:50,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:18:50,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:18:50,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:18:50,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:18:50,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:18:50,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:18:50,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:18:50,338 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 13:18:50,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:18:50,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:18:50,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:18:50,677 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:18:50,677 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:18:50,678 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-12 13:18:50,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/292f89950/97a20e930325454c8b57c563acf7abd7/FLAG2731d9053 [2020-10-12 13:18:51,619 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:18:51,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label09.c [2020-10-12 13:18:51,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/292f89950/97a20e930325454c8b57c563acf7abd7/FLAG2731d9053 [2020-10-12 13:18:52,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/292f89950/97a20e930325454c8b57c563acf7abd7 [2020-10-12 13:18:52,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:18:52,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:18:52,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:18:52,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:18:52,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:18:52,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:18:52" (1/1) ... [2020-10-12 13:18:52,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:52, skipping insertion in model container [2020-10-12 13:18:52,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:18:52" (1/1) ... [2020-10-12 13:18:52,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:18:52,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:18:53,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:18:53,956 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:18:54,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:18:54,688 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:18:54,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54 WrapperNode [2020-10-12 13:18:54,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:18:54,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:18:54,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:18:54,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:18:54,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (1/1) ... [2020-10-12 13:18:54,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (1/1) ... [2020-10-12 13:18:54,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (1/1) ... [2020-10-12 13:18:54,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (1/1) ... [2020-10-12 13:18:54,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (1/1) ... [2020-10-12 13:18:54,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (1/1) ... [2020-10-12 13:18:54,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (1/1) ... [2020-10-12 13:18:55,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:18:55,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:18:55,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:18:55,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:18:55,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (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 13:18:55,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:18:55,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:18:55,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:18:55,108 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:18:55,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:18:55,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:18:55,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:18:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:18:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:18:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:18:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:18:55,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:18:55,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:18:55,112 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:18:55,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:18:55,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:18:55,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:19:00,127 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:19:00,127 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:19:00,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:19:00 BoogieIcfgContainer [2020-10-12 13:19:00,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:19:00,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:19:00,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:19:00,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:19:00,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:18:52" (1/3) ... [2020-10-12 13:19:00,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4362358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:19:00, skipping insertion in model container [2020-10-12 13:19:00,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:18:54" (2/3) ... [2020-10-12 13:19:00,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4362358d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:19:00, skipping insertion in model container [2020-10-12 13:19:00,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:19:00" (3/3) ... [2020-10-12 13:19:00,151 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label09.c [2020-10-12 13:19:00,163 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:19:00,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:19:00,188 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:19:00,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:19:00,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:19:00,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:19:00,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:19:00,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:19:00,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:19:00,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:19:00,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:19:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:19:00,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 13:19:00,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:00,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:19:00,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:00,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:00,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2140665405, now seen corresponding path program 1 times [2020-10-12 13:19:00,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:00,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486384975] [2020-10-12 13:19:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:00,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:01,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:19:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 510 [2020-10-12 13:19:01,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:01,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:19:01,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:19:01,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:01,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:01,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:01,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 13:19:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:01,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 13:19:01,279 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 13:19:01,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486384975] [2020-10-12 13:19:01,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:19:01,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:19:01,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344777631] [2020-10-12 13:19:01,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:19:01,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:01,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:19:01,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:19:01,312 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2020-10-12 13:19:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:10,188 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:19:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:19:10,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-12 13:19:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:10,226 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:19:10,226 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:19:10,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:19:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:19:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:19:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:19:10,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-12 13:19:10,454 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 72 [2020-10-12 13:19:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:10,457 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-12 13:19:10,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:19:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-12 13:19:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-12 13:19:10,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:10,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:19:10,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:19:10,479 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:10,479 INFO L82 PathProgramCache]: Analyzing trace with hash 863579141, now seen corresponding path program 1 times [2020-10-12 13:19:10,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:10,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269023344] [2020-10-12 13:19:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:10,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:10,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:11,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:11,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-12 13:19:11,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:19:11,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-12 13:19:11,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:19:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:11,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-12 13:19:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:12,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:12,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:12,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:12,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:12,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 13:19:12,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:12,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:12,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:12,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:12,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:19:12,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:12,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 13:19:12,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:12,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:19:12,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:19:12,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269023344] [2020-10-12 13:19:12,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:19:12,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:19:12,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219593253] [2020-10-12 13:19:12,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:19:12,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:12,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:19:12,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:19:12,332 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-12 13:19:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:22,924 INFO L93 Difference]: Finished difference Result 4720 states and 7724 transitions. [2020-10-12 13:19:22,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:19:22,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-10-12 13:19:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:22,947 INFO L225 Difference]: With dead ends: 4720 [2020-10-12 13:19:22,948 INFO L226 Difference]: Without dead ends: 3173 [2020-10-12 13:19:22,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:19:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-10-12 13:19:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3147. [2020-10-12 13:19:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3147 states. [2020-10-12 13:19:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4486 transitions. [2020-10-12 13:19:23,096 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4486 transitions. Word has length 147 [2020-10-12 13:19:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:23,100 INFO L479 AbstractCegarLoop]: Abstraction has 3147 states and 4486 transitions. [2020-10-12 13:19:23,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:19:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4486 transitions. [2020-10-12 13:19:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-12 13:19:23,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:23,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:19:23,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:19:23,110 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:23,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash -347586115, now seen corresponding path program 1 times [2020-10-12 13:19:23,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:23,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356758806] [2020-10-12 13:19:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:23,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:24,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:24,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 13:19:24,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:19:24,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1400 [2020-10-12 13:19:24,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:19:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 13:19:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:24,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:24,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:24,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:24,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:24,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 13:19:24,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:24,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:24,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:25,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:25,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 13:19:25,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:25,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-12 13:19:25,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:25,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 13:19:25,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:19:25,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356758806] [2020-10-12 13:19:25,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:19:25,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:19:25,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710921791] [2020-10-12 13:19:25,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:19:25,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:25,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:19:25,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:19:25,236 INFO L87 Difference]: Start difference. First operand 3147 states and 4486 transitions. Second operand 7 states. [2020-10-12 13:19:37,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:37,851 INFO L93 Difference]: Finished difference Result 9659 states and 14074 transitions. [2020-10-12 13:19:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:19:37,852 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-12 13:19:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:37,892 INFO L225 Difference]: With dead ends: 9659 [2020-10-12 13:19:37,892 INFO L226 Difference]: Without dead ends: 6518 [2020-10-12 13:19:37,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:19:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2020-10-12 13:19:38,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 6425. [2020-10-12 13:19:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6425 states. [2020-10-12 13:19:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 8319 transitions. [2020-10-12 13:19:38,115 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 8319 transitions. Word has length 151 [2020-10-12 13:19:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:38,117 INFO L479 AbstractCegarLoop]: Abstraction has 6425 states and 8319 transitions. [2020-10-12 13:19:38,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:19:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 8319 transitions. [2020-10-12 13:19:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 13:19:38,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:38,124 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:19:38,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:19:38,126 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1262712401, now seen corresponding path program 1 times [2020-10-12 13:19:38,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:38,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28030065] [2020-10-12 13:19:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:38,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:38,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-12 13:19:38,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:38,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-10-12 13:19:38,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:38,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:19:38,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 13:19:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:38,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:38,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:38,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:38,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:19:38,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:38,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:38,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:38,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:39,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:39,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:39,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:19:39,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 13:19:39,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:39,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:19:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:19:39,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28030065] [2020-10-12 13:19:39,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:19:39,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:19:39,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731942967] [2020-10-12 13:19:39,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:19:39,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:39,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:19:39,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:19:39,220 INFO L87 Difference]: Start difference. First operand 6425 states and 8319 transitions. Second operand 7 states. [2020-10-12 13:19:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:53,406 INFO L93 Difference]: Finished difference Result 19558 states and 25774 transitions. [2020-10-12 13:19:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:19:53,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-10-12 13:19:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:53,484 INFO L225 Difference]: With dead ends: 19558 [2020-10-12 13:19:53,484 INFO L226 Difference]: Without dead ends: 13139 [2020-10-12 13:19:53,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:19:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13139 states. [2020-10-12 13:19:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13139 to 11412. [2020-10-12 13:19:53,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11412 states. [2020-10-12 13:19:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11412 states to 11412 states and 14387 transitions. [2020-10-12 13:19:53,871 INFO L78 Accepts]: Start accepts. Automaton has 11412 states and 14387 transitions. Word has length 157 [2020-10-12 13:19:53,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:53,872 INFO L479 AbstractCegarLoop]: Abstraction has 11412 states and 14387 transitions. [2020-10-12 13:19:53,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:19:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 11412 states and 14387 transitions. [2020-10-12 13:19:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-12 13:19:53,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:53,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:19:53,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:19:53,878 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:53,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:53,878 INFO L82 PathProgramCache]: Analyzing trace with hash -665193256, now seen corresponding path program 1 times [2020-10-12 13:19:53,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:53,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540706549] [2020-10-12 13:19:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:54,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:55,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:55,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 13:19:55,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:55,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-12 13:19:55,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:55,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:55,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:19:55,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:56,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:56,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:56,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:56,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:56,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 13:19:56,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:56,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:56,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:56,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:56,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:56,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:19:56,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:56,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 13:19:56,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:19:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:19:56,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540706549] [2020-10-12 13:19:56,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:19:56,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:19:56,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925978783] [2020-10-12 13:19:56,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:19:56,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:56,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:19:56,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:19:56,731 INFO L87 Difference]: Start difference. First operand 11412 states and 14387 transitions. Second operand 7 states. [2020-10-12 13:20:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:10,427 INFO L93 Difference]: Finished difference Result 27757 states and 34820 transitions. [2020-10-12 13:20:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:20:10,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-10-12 13:20:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:10,506 INFO L225 Difference]: With dead ends: 27757 [2020-10-12 13:20:10,506 INFO L226 Difference]: Without dead ends: 16351 [2020-10-12 13:20:10,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:20:10,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16351 states. [2020-10-12 13:20:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16351 to 15390. [2020-10-12 13:20:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15390 states. [2020-10-12 13:20:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15390 states to 15390 states and 18744 transitions. [2020-10-12 13:20:10,909 INFO L78 Accepts]: Start accepts. Automaton has 15390 states and 18744 transitions. Word has length 220 [2020-10-12 13:20:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:10,910 INFO L479 AbstractCegarLoop]: Abstraction has 15390 states and 18744 transitions. [2020-10-12 13:20:10,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:20:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 15390 states and 18744 transitions. [2020-10-12 13:20:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-10-12 13:20:10,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:10,916 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:10,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:20:10,917 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:10,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:10,917 INFO L82 PathProgramCache]: Analyzing trace with hash -736537431, now seen corresponding path program 1 times [2020-10-12 13:20:10,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:10,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719747200] [2020-10-12 13:20:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:11,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:13,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:13,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-12 13:20:13,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:20:13,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-10-12 13:20:13,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:20:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:20:13,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 13:20:13,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:13,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:13,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:13,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:13,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:20:13,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:13,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:13,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:13,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:13,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:13,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:20:13,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:13,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 13:20:13,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:13,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:13,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:20:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:14,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:20:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:14,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:14,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:20:14,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:20:14,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 13:20:14,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:20:14,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 135 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:20:14,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719747200] [2020-10-12 13:20:14,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:14,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:20:14,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950197053] [2020-10-12 13:20:14,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:20:14,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:14,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:20:14,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:20:14,503 INFO L87 Difference]: Start difference. First operand 15390 states and 18744 transitions. Second operand 6 states. [2020-10-12 13:20:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:33,236 INFO L93 Difference]: Finished difference Result 36911 states and 46952 transitions. [2020-10-12 13:20:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:20:33,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 292 [2020-10-12 13:20:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:33,322 INFO L225 Difference]: With dead ends: 36911 [2020-10-12 13:20:33,322 INFO L226 Difference]: Without dead ends: 21527 [2020-10-12 13:20:33,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:20:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21527 states. [2020-10-12 13:20:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21527 to 21276. [2020-10-12 13:20:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21276 states. [2020-10-12 13:20:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21276 states to 21276 states and 26694 transitions. [2020-10-12 13:20:33,878 INFO L78 Accepts]: Start accepts. Automaton has 21276 states and 26694 transitions. Word has length 292 [2020-10-12 13:20:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:33,879 INFO L479 AbstractCegarLoop]: Abstraction has 21276 states and 26694 transitions. [2020-10-12 13:20:33,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:20:33,879 INFO L276 IsEmpty]: Start isEmpty. Operand 21276 states and 26694 transitions. [2020-10-12 13:20:33,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-12 13:20:33,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:33,886 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:20:33,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:20:33,887 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:33,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:33,887 INFO L82 PathProgramCache]: Analyzing trace with hash 261238517, now seen corresponding path program 1 times [2020-10-12 13:20:33,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:33,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710088051] [2020-10-12 13:20:33,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:36,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:36,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 13:20:36,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:20:36,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2320 [2020-10-12 13:20:36,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:20:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-12 13:20:36,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-12 13:20:36,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:36,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:36,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:36,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:36,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:20:36,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:36,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:36,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:36,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:20:36,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:36,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 13:20:36,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:36,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-12 13:20:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:20:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:36,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:36,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:36,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 13:20:36,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:20:36,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 13:20:36,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:36,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 13:20:36,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 149 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:20:37,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710088051] [2020-10-12 13:20:37,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:37,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:20:37,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311327828] [2020-10-12 13:20:37,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:20:37,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:37,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:20:37,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:20:37,041 INFO L87 Difference]: Start difference. First operand 21276 states and 26694 transitions. Second operand 7 states. [2020-10-12 13:21:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:03,270 INFO L93 Difference]: Finished difference Result 79720 states and 106612 transitions. [2020-10-12 13:21:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:21:03,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-12 13:21:03,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:03,514 INFO L225 Difference]: With dead ends: 79720 [2020-10-12 13:21:03,514 INFO L226 Difference]: Without dead ends: 57623 [2020-10-12 13:21:03,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:21:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57623 states. [2020-10-12 13:21:05,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57623 to 57524. [2020-10-12 13:21:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57524 states. [2020-10-12 13:21:05,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57524 states to 57524 states and 75604 transitions. [2020-10-12 13:21:05,228 INFO L78 Accepts]: Start accepts. Automaton has 57524 states and 75604 transitions. Word has length 310 [2020-10-12 13:21:05,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:05,229 INFO L479 AbstractCegarLoop]: Abstraction has 57524 states and 75604 transitions. [2020-10-12 13:21:05,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:21:05,230 INFO L276 IsEmpty]: Start isEmpty. Operand 57524 states and 75604 transitions. [2020-10-12 13:21:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-12 13:21:05,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:05,241 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:21:05,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:21:05,242 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:05,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:05,242 INFO L82 PathProgramCache]: Analyzing trace with hash -763884988, now seen corresponding path program 1 times [2020-10-12 13:21:05,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:05,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237046482] [2020-10-12 13:21:05,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:05,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:05,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:05,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 369 [2020-10-12 13:21:05,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:05,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-12 13:21:05,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-12 13:21:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:21:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:06,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:06,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:06,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:06,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:06,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:06,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:21:06,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:06,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:06,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:06,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:06,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:06,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:06,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:21:06,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 13:21:06,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:06,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:06,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:06,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:06,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:21:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:06,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-12 13:21:06,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 13:21:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-12 13:21:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-12 13:21:06,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237046482] [2020-10-12 13:21:06,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:06,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:21:06,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919073267] [2020-10-12 13:21:06,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:21:06,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:06,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:21:06,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:21:06,665 INFO L87 Difference]: Start difference. First operand 57524 states and 75604 transitions. Second operand 5 states. [2020-10-12 13:21:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:23,105 INFO L93 Difference]: Finished difference Result 137578 states and 189010 transitions. [2020-10-12 13:21:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:21:23,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 357 [2020-10-12 13:21:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:23,375 INFO L225 Difference]: With dead ends: 137578 [2020-10-12 13:21:23,375 INFO L226 Difference]: Without dead ends: 80827 [2020-10-12 13:21:23,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 13:21:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80827 states. [2020-10-12 13:21:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80827 to 80799. [2020-10-12 13:21:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80799 states. [2020-10-12 13:21:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80799 states to 80799 states and 104513 transitions. [2020-10-12 13:21:25,272 INFO L78 Accepts]: Start accepts. Automaton has 80799 states and 104513 transitions. Word has length 357 [2020-10-12 13:21:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:25,273 INFO L479 AbstractCegarLoop]: Abstraction has 80799 states and 104513 transitions. [2020-10-12 13:21:25,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:21:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 80799 states and 104513 transitions. [2020-10-12 13:21:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-12 13:21:25,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:25,285 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:21:25,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:21:25,285 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:25,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:25,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2096733004, now seen corresponding path program 1 times [2020-10-12 13:21:25,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:25,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770805544] [2020-10-12 13:21:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:26,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:28,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-12 13:21:28,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:21:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3567 [2020-10-12 13:21:28,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 305 [2020-10-12 13:21:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 13:21:28,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:29,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:29,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:29,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:21:29,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:29,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:29,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:29,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:29,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:29,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:21:29,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:29,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 13:21:29,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:21:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:21:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:29,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:29,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:21:29,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:29,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 13:21:29,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:29,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:29,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-12 13:21:29,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-10-12 13:21:29,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770805544] [2020-10-12 13:21:29,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:29,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:21:29,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997178461] [2020-10-12 13:21:29,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:21:29,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:29,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:21:29,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:21:29,639 INFO L87 Difference]: Start difference. First operand 80799 states and 104513 transitions. Second operand 5 states. [2020-10-12 13:21:46,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:21:46,973 INFO L93 Difference]: Finished difference Result 183262 states and 245532 transitions. [2020-10-12 13:21:46,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:21:46,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 365 [2020-10-12 13:21:46,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:21:47,371 INFO L225 Difference]: With dead ends: 183262 [2020-10-12 13:21:47,372 INFO L226 Difference]: Without dead ends: 103236 [2020-10-12 13:21:47,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:21:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103236 states. [2020-10-12 13:21:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103236 to 103220. [2020-10-12 13:21:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103220 states. [2020-10-12 13:21:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103220 states to 103220 states and 130978 transitions. [2020-10-12 13:21:49,440 INFO L78 Accepts]: Start accepts. Automaton has 103220 states and 130978 transitions. Word has length 365 [2020-10-12 13:21:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:21:49,441 INFO L479 AbstractCegarLoop]: Abstraction has 103220 states and 130978 transitions. [2020-10-12 13:21:49,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:21:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 103220 states and 130978 transitions. [2020-10-12 13:21:49,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-12 13:21:49,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:21:49,456 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:21:49,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:21:49,456 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:21:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:21:49,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1389505171, now seen corresponding path program 1 times [2020-10-12 13:21:49,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:21:49,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226722343] [2020-10-12 13:21:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:21:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:50,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:52,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:54,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:54,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-12 13:21:54,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:21:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-12 13:21:54,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:21:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-12 13:21:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-12 13:21:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:21:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:54,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:54,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:21:54,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:21:54,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:21:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:21:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:54,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:21:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:54,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:54,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 13:21:54,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:54,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 13:21:54,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:21:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:21:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-12 13:21:54,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:54,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-12 13:21:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:54,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:55,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:55,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:55,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:21:55,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:21:55,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-12 13:21:55,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:55,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:21:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:55,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-12 13:21:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:21:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:21:55,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:21:55,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:21:55,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:21:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 13:21:55,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:21:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:21:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:21:55,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:21:55,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:21:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 377 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 13:21:55,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226722343] [2020-10-12 13:21:55,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:21:55,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:21:55,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533416504] [2020-10-12 13:21:55,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:21:55,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:21:55,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:21:55,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:21:55,427 INFO L87 Difference]: Start difference. First operand 103220 states and 130978 transitions. Second operand 7 states. [2020-10-12 13:22:19,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:22:19,790 INFO L93 Difference]: Finished difference Result 237757 states and 309887 transitions. [2020-10-12 13:22:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:22:19,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 405 [2020-10-12 13:22:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:22:20,202 INFO L225 Difference]: With dead ends: 237757 [2020-10-12 13:22:20,202 INFO L226 Difference]: Without dead ends: 135310 [2020-10-12 13:22:20,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:22:20,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135310 states. [2020-10-12 13:22:26,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135310 to 135276. [2020-10-12 13:22:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135276 states. [2020-10-12 13:22:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135276 states to 135276 states and 174737 transitions. [2020-10-12 13:22:26,476 INFO L78 Accepts]: Start accepts. Automaton has 135276 states and 174737 transitions. Word has length 405 [2020-10-12 13:22:26,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:22:26,477 INFO L479 AbstractCegarLoop]: Abstraction has 135276 states and 174737 transitions. [2020-10-12 13:22:26,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:22:26,477 INFO L276 IsEmpty]: Start isEmpty. Operand 135276 states and 174737 transitions. [2020-10-12 13:22:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-12 13:22:26,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:22:26,489 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:26,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:22:26,490 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:22:26,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:22:26,490 INFO L82 PathProgramCache]: Analyzing trace with hash -880380495, now seen corresponding path program 1 times [2020-10-12 13:22:26,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:22:26,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091479936] [2020-10-12 13:22:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:22:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:22:26,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:22:26,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking...