/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_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:17:00,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:17:00,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:17:00,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:17:00,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:17:00,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:17:00,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:17:00,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:17:00,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:17:00,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:17:00,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:17:00,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:17:00,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:17:00,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:17:00,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:17:00,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:17:00,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:17:00,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:17:00,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:17:00,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:17:00,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:17:00,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:17:00,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:17:00,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:17:00,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:17:00,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:17:00,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:17:00,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:17:00,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:17:00,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:17:00,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:17:00,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:17:00,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:17:00,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:17:00,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:17:00,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:17:00,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:17:00,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:17:00,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:17:00,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:17:00,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:17:00,316 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 13:17:00,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:17:00,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:17:00,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:17:00,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:17:00,360 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:17:00,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:17:00,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:17:00,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:17:00,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:17:00,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:17:00,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:17:00,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:17:00,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:17:00,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:17:00,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:17:00,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:17:00,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:17:00,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:17:00,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:17:00,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:17:00,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:17:00,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:17:00,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:17:00,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:17:00,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:17:00,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:17:00,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:17:00,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:17:00,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:17:00,367 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 13:17:00,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:17:00,682 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:17:00,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:17:00,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:17:00,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:17:00,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label00.c [2020-10-12 13:17:00,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25429823c/42fff80bea024d0d9acc6d92263b2991/FLAG4038be9fc [2020-10-12 13:17:01,552 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:17:01,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label00.c [2020-10-12 13:17:01,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25429823c/42fff80bea024d0d9acc6d92263b2991/FLAG4038be9fc [2020-10-12 13:17:01,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/25429823c/42fff80bea024d0d9acc6d92263b2991 [2020-10-12 13:17:01,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:17:01,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:17:01,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:17:01,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:17:01,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:17:01,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:17:01" (1/1) ... [2020-10-12 13:17:01,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:01, skipping insertion in model container [2020-10-12 13:17:01,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:17:01" (1/1) ... [2020-10-12 13:17:01,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:17:01,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:17:03,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:17:03,404 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:17:04,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:17:04,175 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:17:04,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04 WrapperNode [2020-10-12 13:17:04,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:17:04,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:17:04,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:17:04,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:17:04,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (1/1) ... [2020-10-12 13:17:04,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (1/1) ... [2020-10-12 13:17:04,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (1/1) ... [2020-10-12 13:17:04,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (1/1) ... [2020-10-12 13:17:04,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (1/1) ... [2020-10-12 13:17:04,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (1/1) ... [2020-10-12 13:17:04,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (1/1) ... [2020-10-12 13:17:04,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:17:04,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:17:04,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:17:04,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:17:04,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (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 13:17:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:17:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:17:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:17:04,524 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:17:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:17:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:17:04,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:17:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:17:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:17:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:17:04,529 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:17:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:17:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:17:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:17:04,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:17:04,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:17:09,582 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:17:09,583 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:17:09,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:17:09 BoogieIcfgContainer [2020-10-12 13:17:09,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:17:09,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:17:09,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:17:09,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:17:09,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:17:01" (1/3) ... [2020-10-12 13:17:09,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d574086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:17:09, skipping insertion in model container [2020-10-12 13:17:09,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:17:04" (2/3) ... [2020-10-12 13:17:09,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d574086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:17:09, skipping insertion in model container [2020-10-12 13:17:09,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:17:09" (3/3) ... [2020-10-12 13:17:09,611 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label00.c [2020-10-12 13:17:09,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:17:09,635 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:17:09,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:17:09,684 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:17:09,685 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:17:09,685 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:17:09,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:17:09,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:17:09,685 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:17:09,685 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:17:09,685 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:17:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-12 13:17:09,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 13:17:09,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:09,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:09,741 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:09,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1784275510, now seen corresponding path program 1 times [2020-10-12 13:17:09,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:09,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339054959] [2020-10-12 13:17:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:10,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:10,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:10,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 13:17:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-12 13:17:10,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:17:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:17:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 13:17:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:17:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:10,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:10,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:10,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:10,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:10,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 13:17:10,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:17:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:10,489 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 13:17:10,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339054959] [2020-10-12 13:17:10,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:17:10,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 13:17:10,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207463587] [2020-10-12 13:17:10,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 13:17:10,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 13:17:10,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 13:17:10,534 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-12 13:17:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:18,831 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-12 13:17:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:17:18,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-12 13:17:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:18,866 INFO L225 Difference]: With dead ends: 2471 [2020-10-12 13:17:18,866 INFO L226 Difference]: Without dead ends: 1568 [2020-10-12 13:17:18,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:17:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-12 13:17:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-12 13:17:19,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-12 13:17:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-12 13:17:19,025 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 21 [2020-10-12 13:17:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:19,026 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-12 13:17:19,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 13:17:19,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-12 13:17:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 13:17:19,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:19,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:19,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:17:19,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:19,033 INFO L82 PathProgramCache]: Analyzing trace with hash 547210915, now seen corresponding path program 1 times [2020-10-12 13:17:19,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:19,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800689489] [2020-10-12 13:17:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:19,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:19,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:17:19,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 13:17:19,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:17:19,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 13:17:19,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:19,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:19,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:19,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:19,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:17:19,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:17:19,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:19,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:17:19,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:19,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:19,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:17:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 13:17:19,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:19,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:17:19,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:17:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:17:19,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800689489] [2020-10-12 13:17:19,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:19,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 13:17:19,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331259666] [2020-10-12 13:17:19,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:17:19,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:19,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:17:19,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:17:19,562 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-12 13:17:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:28,412 INFO L93 Difference]: Finished difference Result 4680 states and 7660 transitions. [2020-10-12 13:17:28,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 13:17:28,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-10-12 13:17:28,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:28,432 INFO L225 Difference]: With dead ends: 4680 [2020-10-12 13:17:28,432 INFO L226 Difference]: Without dead ends: 3133 [2020-10-12 13:17:28,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:17:28,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-12 13:17:28,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3119. [2020-10-12 13:17:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3119 states. [2020-10-12 13:17:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4785 transitions. [2020-10-12 13:17:28,527 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4785 transitions. Word has length 96 [2020-10-12 13:17:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:28,528 INFO L479 AbstractCegarLoop]: Abstraction has 3119 states and 4785 transitions. [2020-10-12 13:17:28,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:17:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4785 transitions. [2020-10-12 13:17:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 13:17:28,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:28,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:28,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:17:28,531 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:28,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:28,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2073645474, now seen corresponding path program 1 times [2020-10-12 13:17:28,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:28,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842512763] [2020-10-12 13:17:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:28,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:29,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:29,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:29,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 13:17:29,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:17:29,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-12 13:17:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:17:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:17:29,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 13:17:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:17:29,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:29,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:29,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:29,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:29,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:29,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:17:29,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:29,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:17:29,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:29,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:29,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:29,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 13:17:29,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 13:17:29,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:29,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 13:17:29,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:17:30,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 13:17:30,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842512763] [2020-10-12 13:17:30,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:17:30,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:17:30,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097165778] [2020-10-12 13:17:30,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:17:30,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:17:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:17:30,020 INFO L87 Difference]: Start difference. First operand 3119 states and 4785 transitions. Second operand 7 states. [2020-10-12 13:17:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:41,251 INFO L93 Difference]: Finished difference Result 9434 states and 14854 transitions. [2020-10-12 13:17:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:17:41,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-12 13:17:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:41,296 INFO L225 Difference]: With dead ends: 9434 [2020-10-12 13:17:41,296 INFO L226 Difference]: Without dead ends: 6321 [2020-10-12 13:17:41,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-12 13:17:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2020-10-12 13:17:41,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 6252. [2020-10-12 13:17:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6252 states. [2020-10-12 13:17:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 9501 transitions. [2020-10-12 13:17:41,505 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 9501 transitions. Word has length 99 [2020-10-12 13:17:41,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:41,507 INFO L479 AbstractCegarLoop]: Abstraction has 6252 states and 9501 transitions. [2020-10-12 13:17:41,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:17:41,507 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 9501 transitions. [2020-10-12 13:17:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-12 13:17:41,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:41,518 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:17:41,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:17:41,519 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:41,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:41,519 INFO L82 PathProgramCache]: Analyzing trace with hash -2048367977, now seen corresponding path program 1 times [2020-10-12 13:17:41,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:41,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353953766] [2020-10-12 13:17:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:41,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:42,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:42,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 13:17:42,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:42,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 827 [2020-10-12 13:17:42,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:17:42,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:17:42,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 13:17:42,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:42,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:42,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:42,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:42,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:17:42,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:42,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:17:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:42,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:42,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:17:42,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:42,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 13:17:42,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:42,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:17:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:17:42,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353953766] [2020-10-12 13:17:42,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:17:42,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:17:42,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411907013] [2020-10-12 13:17:42,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:17:42,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:42,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:17:42,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:17:42,734 INFO L87 Difference]: Start difference. First operand 6252 states and 9501 transitions. Second operand 7 states. [2020-10-12 13:17:53,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:17:53,931 INFO L93 Difference]: Finished difference Result 18221 states and 28748 transitions. [2020-10-12 13:17:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 13:17:53,933 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-12 13:17:53,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:17:54,002 INFO L225 Difference]: With dead ends: 18221 [2020-10-12 13:17:54,002 INFO L226 Difference]: Without dead ends: 11975 [2020-10-12 13:17:54,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:17:54,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11975 states. [2020-10-12 13:17:54,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11975 to 11054. [2020-10-12 13:17:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11054 states. [2020-10-12 13:17:54,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11054 states to 11054 states and 16176 transitions. [2020-10-12 13:17:54,392 INFO L78 Accepts]: Start accepts. Automaton has 11054 states and 16176 transitions. Word has length 106 [2020-10-12 13:17:54,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:17:54,394 INFO L479 AbstractCegarLoop]: Abstraction has 11054 states and 16176 transitions. [2020-10-12 13:17:54,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:17:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 11054 states and 16176 transitions. [2020-10-12 13:17:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 13:17:54,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:17:54,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:17:54,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:17:54,398 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:17:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:17:54,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1170373647, now seen corresponding path program 1 times [2020-10-12 13:17:54,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:17:54,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101898750] [2020-10-12 13:17:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:17:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:54,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:54,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 13:17:55,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:17:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 853 [2020-10-12 13:17:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:17:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:17:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:17:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:55,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:17:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:55,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:55,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:17:55,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:55,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:17:55,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:17:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:17:55,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:17:55,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:55,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:17:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:17:55,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:17:55,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:17:55,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:17:55,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:17:55,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-12 13:17:55,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:17:55,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:17:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:17:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:17:55,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:17:55,843 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:17:55,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101898750] [2020-10-12 13:17:55,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:17:55,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:17:55,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424090340] [2020-10-12 13:17:55,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:17:55,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:17:55,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:17:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:17:55,846 INFO L87 Difference]: Start difference. First operand 11054 states and 16176 transitions. Second operand 7 states. [2020-10-12 13:18:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:08,883 INFO L93 Difference]: Finished difference Result 22433 states and 33674 transitions. [2020-10-12 13:18:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:18:08,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-12 13:18:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:08,923 INFO L225 Difference]: With dead ends: 22433 [2020-10-12 13:18:08,923 INFO L226 Difference]: Without dead ends: 11385 [2020-10-12 13:18:08,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:18:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11385 states. [2020-10-12 13:18:09,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11385 to 11248. [2020-10-12 13:18:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11248 states. [2020-10-12 13:18:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 16213 transitions. [2020-10-12 13:18:09,201 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 16213 transitions. Word has length 134 [2020-10-12 13:18:09,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:09,202 INFO L479 AbstractCegarLoop]: Abstraction has 11248 states and 16213 transitions. [2020-10-12 13:18:09,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:18:09,202 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 16213 transitions. [2020-10-12 13:18:09,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 13:18:09,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:09,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:18:09,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:18:09,206 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:09,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:09,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1264263046, now seen corresponding path program 1 times [2020-10-12 13:18:09,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:09,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232344914] [2020-10-12 13:18:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:09,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:09,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 13:18:11,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:18:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1759 [2020-10-12 13:18:11,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:18:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:18:11,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-12 13:18:11,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:11,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:18:11,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:11,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:11,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:11,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:18:11,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 13:18:11,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:18:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:18:11,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:11,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:11,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:18:11,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 13:18:11,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:18:11,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:11,513 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-12 13:18:11,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232344914] [2020-10-12 13:18:11,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:11,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:18:11,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301901481] [2020-10-12 13:18:11,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:18:11,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:11,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:18:11,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:18:11,517 INFO L87 Difference]: Start difference. First operand 11248 states and 16213 transitions. Second operand 7 states. [2020-10-12 13:18:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:26,539 INFO L93 Difference]: Finished difference Result 34379 states and 52668 transitions. [2020-10-12 13:18:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:18:26,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-12 13:18:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:26,620 INFO L225 Difference]: With dead ends: 34379 [2020-10-12 13:18:26,620 INFO L226 Difference]: Without dead ends: 23137 [2020-10-12 13:18:26,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:18:26,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23137 states. [2020-10-12 13:18:27,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23137 to 22782. [2020-10-12 13:18:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22782 states. [2020-10-12 13:18:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22782 states to 22782 states and 31359 transitions. [2020-10-12 13:18:27,293 INFO L78 Accepts]: Start accepts. Automaton has 22782 states and 31359 transitions. Word has length 169 [2020-10-12 13:18:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:27,293 INFO L479 AbstractCegarLoop]: Abstraction has 22782 states and 31359 transitions. [2020-10-12 13:18:27,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:18:27,294 INFO L276 IsEmpty]: Start isEmpty. Operand 22782 states and 31359 transitions. [2020-10-12 13:18:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-12 13:18:27,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:27,297 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:27,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:18:27,298 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:27,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1806177194, now seen corresponding path program 1 times [2020-10-12 13:18:27,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:27,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974711413] [2020-10-12 13:18:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:27,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:28,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:28,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-12 13:18:28,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:18:28,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-12 13:18:28,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 13:18:28,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 13:18:28,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:28,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:28,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:28,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:28,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:28,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:18:28,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:28,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:28,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:28,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:28,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:18:28,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:28,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 13:18:28,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:28,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 13:18:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:18:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:18:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:28,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:28,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:18:28,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:28,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 13:18:28,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:28,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:18:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:18:28,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974711413] [2020-10-12 13:18:28,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:28,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:18:28,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544273692] [2020-10-12 13:18:28,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:18:28,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:28,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:18:28,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:18:28,962 INFO L87 Difference]: Start difference. First operand 22782 states and 31359 transitions. Second operand 7 states. [2020-10-12 13:18:50,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:18:50,412 INFO L93 Difference]: Finished difference Result 66142 states and 98439 transitions. [2020-10-12 13:18:50,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:18:50,414 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-12 13:18:50,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:18:50,575 INFO L225 Difference]: With dead ends: 66142 [2020-10-12 13:18:50,576 INFO L226 Difference]: Without dead ends: 43366 [2020-10-12 13:18:50,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 13:18:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43366 states. [2020-10-12 13:18:51,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43366 to 42315. [2020-10-12 13:18:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42315 states. [2020-10-12 13:18:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42315 states to 42315 states and 58057 transitions. [2020-10-12 13:18:51,586 INFO L78 Accepts]: Start accepts. Automaton has 42315 states and 58057 transitions. Word has length 209 [2020-10-12 13:18:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:18:51,586 INFO L479 AbstractCegarLoop]: Abstraction has 42315 states and 58057 transitions. [2020-10-12 13:18:51,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:18:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 42315 states and 58057 transitions. [2020-10-12 13:18:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 13:18:51,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:18:51,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:18:51,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:18:51,593 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:18:51,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:18:51,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1160611835, now seen corresponding path program 1 times [2020-10-12 13:18:51,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:18:51,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384226732] [2020-10-12 13:18:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:18:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:51,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:55,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:55,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 13:18:55,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:18:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3630 [2020-10-12 13:18:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:18:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:18:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-12 13:18:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:55,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:18:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:55,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:55,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:55,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:18:55,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:55,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 13:18:55,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:18:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:18:55,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:18:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:55,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:18:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:55,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:55,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-12 13:18:55,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:55,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-12 13:18:55,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:18:55,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:18:55,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-12 13:18:55,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:18:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-12 13:18:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:18:55,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:18:56,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:18:56,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:18:56,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:18:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 13:18:56,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:18:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:18:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-12 13:18:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:18:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:18:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:18:56,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384226732] [2020-10-12 13:18:56,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:18:56,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:18:56,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776580846] [2020-10-12 13:18:56,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:18:56,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:18:56,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:18:56,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:18:56,196 INFO L87 Difference]: Start difference. First operand 42315 states and 58057 transitions. Second operand 7 states. [2020-10-12 13:19:09,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:09,567 INFO L93 Difference]: Finished difference Result 85930 states and 118569 transitions. [2020-10-12 13:19:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:19:09,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-12 13:19:09,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:09,714 INFO L225 Difference]: With dead ends: 85930 [2020-10-12 13:19:09,714 INFO L226 Difference]: Without dead ends: 43625 [2020-10-12 13:19:09,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:19:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43625 states. [2020-10-12 13:19:10,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43625 to 41748. [2020-10-12 13:19:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41748 states. [2020-10-12 13:19:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41748 states to 41748 states and 57358 transitions. [2020-10-12 13:19:10,606 INFO L78 Accepts]: Start accepts. Automaton has 41748 states and 57358 transitions. Word has length 242 [2020-10-12 13:19:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:10,607 INFO L479 AbstractCegarLoop]: Abstraction has 41748 states and 57358 transitions. [2020-10-12 13:19:10,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:19:10,607 INFO L276 IsEmpty]: Start isEmpty. Operand 41748 states and 57358 transitions. [2020-10-12 13:19:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-12 13:19:10,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:10,617 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 13:19:10,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 13:19:10,617 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:10,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:10,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1147048554, now seen corresponding path program 1 times [2020-10-12 13:19:10,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:10,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667076271] [2020-10-12 13:19:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:11,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:11,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:14,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:14,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-12 13:19:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 13:19:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4020 [2020-10-12 13:19:14,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:19:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-12 13:19:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-12 13:19:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:14,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:14,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:14,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:14,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:14,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 13:19:14,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:19:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:14,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:19:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:14,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:14,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:19:14,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:14,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 13:19:14,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:19:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:14,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:19:14,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:14,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:19:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:14,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:14,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 13:19:14,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 13:19:14,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:14,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 13:19:14,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:15,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-12 13:19:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:15,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:15,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 13:19:15,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 13:19:15,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 13:19:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:19:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 184 proven. 15 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-12 13:19:15,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667076271] [2020-10-12 13:19:15,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:19:15,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:19:15,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334776915] [2020-10-12 13:19:15,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:19:15,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:15,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:19:15,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:19:15,582 INFO L87 Difference]: Start difference. First operand 41748 states and 57358 transitions. Second operand 6 states. [2020-10-12 13:19:35,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:19:35,181 INFO L93 Difference]: Finished difference Result 104089 states and 148139 transitions. [2020-10-12 13:19:35,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:19:35,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 283 [2020-10-12 13:19:35,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:19:35,401 INFO L225 Difference]: With dead ends: 104089 [2020-10-12 13:19:35,402 INFO L226 Difference]: Without dead ends: 63114 [2020-10-12 13:19:35,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:19:35,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63114 states. [2020-10-12 13:19:36,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63114 to 62216. [2020-10-12 13:19:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62216 states. [2020-10-12 13:19:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62216 states to 62216 states and 83223 transitions. [2020-10-12 13:19:36,734 INFO L78 Accepts]: Start accepts. Automaton has 62216 states and 83223 transitions. Word has length 283 [2020-10-12 13:19:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:19:36,735 INFO L479 AbstractCegarLoop]: Abstraction has 62216 states and 83223 transitions. [2020-10-12 13:19:36,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:19:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 62216 states and 83223 transitions. [2020-10-12 13:19:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-12 13:19:36,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:19:36,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:19:36,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 13:19:36,744 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:19:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:19:36,744 INFO L82 PathProgramCache]: Analyzing trace with hash -283153822, now seen corresponding path program 1 times [2020-10-12 13:19:36,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:19:36,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197311414] [2020-10-12 13:19:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:19:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:37,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:40,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:40,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-12 13:19:40,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:19:40,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3344 [2020-10-12 13:19:40,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:40,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:19:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:19:40,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-12 13:19:40,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:40,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:19:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:40,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:40,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:19:40,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 13:19:40,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:19:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:19:40,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:19:40,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:40,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:19:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:40,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:40,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 13:19:40,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:19:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-12 13:19:40,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:40,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 13:19:40,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:40,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-12 13:19:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:19:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:19:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:19:41,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-12 13:19:41,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:19:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 13:19:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:19:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:19:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:19:41,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 13:19:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:19:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 29 proven. 108 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:19:41,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197311414] [2020-10-12 13:19:41,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:19:41,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:19:41,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895393671] [2020-10-12 13:19:41,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:19:41,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:19:41,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:19:41,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:19:41,948 INFO L87 Difference]: Start difference. First operand 62216 states and 83223 transitions. Second operand 8 states. [2020-10-12 13:20:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:07,312 INFO L93 Difference]: Finished difference Result 150902 states and 226605 transitions. [2020-10-12 13:20:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:20:07,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2020-10-12 13:20:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:07,625 INFO L225 Difference]: With dead ends: 150902 [2020-10-12 13:20:07,625 INFO L226 Difference]: Without dead ends: 89459 [2020-10-12 13:20:07,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-12 13:20:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89459 states. [2020-10-12 13:20:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89459 to 85987. [2020-10-12 13:20:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85987 states. [2020-10-12 13:20:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85987 states to 85987 states and 111671 transitions. [2020-10-12 13:20:10,141 INFO L78 Accepts]: Start accepts. Automaton has 85987 states and 111671 transitions. Word has length 283 [2020-10-12 13:20:10,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:10,142 INFO L479 AbstractCegarLoop]: Abstraction has 85987 states and 111671 transitions. [2020-10-12 13:20:10,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:20:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 85987 states and 111671 transitions. [2020-10-12 13:20:10,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-12 13:20:10,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:10,151 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 13:20:10,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 13:20:10,152 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:10,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:10,152 INFO L82 PathProgramCache]: Analyzing trace with hash 291512946, now seen corresponding path program 1 times [2020-10-12 13:20:10,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:10,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879472159] [2020-10-12 13:20:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:10,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:10,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:10,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:12,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:12,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 13:20:12,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:20:12,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-10-12 13:20:12,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 211 [2020-10-12 13:20:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:20:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:12,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:20:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:12,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:12,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:20:12,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:12,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:20:12,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:12,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:20:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:12,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:12,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:12,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:20:12,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 13:20:12,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:20:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:20:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:12,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 13:20:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:12,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:12,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 13:20:12,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:12,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 13:20:12,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:20:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:20:12,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-12 13:20:12,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:20:12,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-10-12 13:20:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:13,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:20:13,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 13:20:13,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:20:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 13:20:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:20:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:20:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:20:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 13:20:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:20:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-12 13:20:13,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879472159] [2020-10-12 13:20:13,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:20:13,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:20:13,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649331419] [2020-10-12 13:20:13,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:20:13,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:20:13,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:20:13,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:20:13,774 INFO L87 Difference]: Start difference. First operand 85987 states and 111671 transitions. Second operand 7 states. [2020-10-12 13:20:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:20:36,998 INFO L93 Difference]: Finished difference Result 155163 states and 202879 transitions. [2020-10-12 13:20:37,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:20:37,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-12 13:20:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:20:37,182 INFO L225 Difference]: With dead ends: 155163 [2020-10-12 13:20:37,182 INFO L226 Difference]: Without dead ends: 86205 [2020-10-12 13:20:37,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 13:20:37,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86205 states. [2020-10-12 13:20:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86205 to 84501. [2020-10-12 13:20:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84501 states. [2020-10-12 13:20:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84501 states to 84501 states and 105792 transitions. [2020-10-12 13:20:38,619 INFO L78 Accepts]: Start accepts. Automaton has 84501 states and 105792 transitions. Word has length 293 [2020-10-12 13:20:38,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:20:38,621 INFO L479 AbstractCegarLoop]: Abstraction has 84501 states and 105792 transitions. [2020-10-12 13:20:38,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:20:38,621 INFO L276 IsEmpty]: Start isEmpty. Operand 84501 states and 105792 transitions. [2020-10-12 13:20:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-12 13:20:38,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:20:38,633 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:38,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 13:20:38,634 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:20:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:20:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash 287283518, now seen corresponding path program 1 times [2020-10-12 13:20:38,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:20:38,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236461305] [2020-10-12 13:20:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:20:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:20:38,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:38,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:20:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking...