/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:46:37,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:46:37,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:46:37,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:46:37,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:46:37,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:46:37,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:46:37,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:46:37,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:46:37,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:46:37,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:46:37,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:46:37,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:46:37,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:46:37,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:46:37,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:46:37,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:46:37,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:46:37,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:46:37,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:46:37,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:46:37,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:46:37,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:46:37,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:46:37,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:46:37,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:46:37,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:46:37,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:46:37,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:46:37,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:46:37,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:46:37,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:46:37,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:46:37,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:46:37,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:46:37,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:46:37,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:46:37,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:46:37,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:46:37,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:46:37,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:46:37,237 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 [2020-10-29 06:46:37,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:46:37,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:46:37,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:46:37,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:46:37,265 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:46:37,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:46:37,266 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:46:37,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:46:37,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:46:37,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:46:37,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:46:37,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:46:37,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:46:37,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:46:37,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:46:37,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:46:37,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:46:37,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:46:37,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:46:37,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:46:37,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:46:37,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:46:37,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:46:37,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:46:37,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:46:37,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:46:37,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:46:37,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:46:37,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:46:37,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:46:37,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:46:37,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:46:37,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:46:37,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:46:37,668 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:46:37,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30.c [2020-10-29 06:46:37,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebab7c9f7/43cecfe63ab64526af4da1803fbcd85b/FLAG3a8196c5d [2020-10-29 06:46:38,544 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:46:38,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label30.c [2020-10-29 06:46:38,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebab7c9f7/43cecfe63ab64526af4da1803fbcd85b/FLAG3a8196c5d [2020-10-29 06:46:38,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ebab7c9f7/43cecfe63ab64526af4da1803fbcd85b [2020-10-29 06:46:38,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:46:38,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:46:38,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:46:38,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:46:38,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:46:38,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:46:38" (1/1) ... [2020-10-29 06:46:38,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396e584c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:38, skipping insertion in model container [2020-10-29 06:46:38,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:46:38" (1/1) ... [2020-10-29 06:46:38,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:46:38,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:46:39,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:46:39,517 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:46:39,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:46:39,689 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:46:39,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39 WrapperNode [2020-10-29 06:46:39,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:46:39,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:46:39,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:46:39,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:46:39,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (1/1) ... [2020-10-29 06:46:39,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (1/1) ... [2020-10-29 06:46:39,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (1/1) ... [2020-10-29 06:46:39,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (1/1) ... [2020-10-29 06:46:39,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (1/1) ... [2020-10-29 06:46:39,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (1/1) ... [2020-10-29 06:46:39,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (1/1) ... [2020-10-29 06:46:39,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:46:39,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:46:39,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:46:39,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:46:39,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (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 [2020-10-29 06:46:39,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:46:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:46:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:46:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:46:39,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:46:39,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:46:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:46:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:46:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:46:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:46:39,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:46:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:46:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:46:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:46:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:46:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:46:39,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:46:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:46:39,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:46:41,867 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:46:41,867 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:46:41,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:46:41 BoogieIcfgContainer [2020-10-29 06:46:41,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:46:41,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:46:41,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:46:41,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:46:41,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:46:38" (1/3) ... [2020-10-29 06:46:41,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6d59f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:46:41, skipping insertion in model container [2020-10-29 06:46:41,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:39" (2/3) ... [2020-10-29 06:46:41,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b6d59f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:46:41, skipping insertion in model container [2020-10-29 06:46:41,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:46:41" (3/3) ... [2020-10-29 06:46:41,886 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label30.c [2020-10-29 06:46:41,899 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:46:41,905 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:46:41,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:46:41,963 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:46:41,964 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:46:41,964 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:46:41,964 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:46:41,964 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:46:41,964 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:46:41,964 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:46:41,965 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:46:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:46:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 06:46:42,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:42,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:42,011 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:42,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:42,020 INFO L82 PathProgramCache]: Analyzing trace with hash -964503696, now seen corresponding path program 1 times [2020-10-29 06:46:42,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:42,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968365232] [2020-10-29 06:46:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:42,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:42,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 06:46:42,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:42,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 677 [2020-10-29 06:46:42,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:42,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:42,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 06:46:42,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:46:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 06:46:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:43,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:43,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968365232] [2020-10-29 06:46:43,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:43,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:46:43,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636858812] [2020-10-29 06:46:43,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:46:43,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:43,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:46:43,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:46:43,188 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-29 06:46:46,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:46,520 INFO L93 Difference]: Finished difference Result 810 states and 1408 transitions. [2020-10-29 06:46:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:46:46,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-29 06:46:46,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:46,541 INFO L225 Difference]: With dead ends: 810 [2020-10-29 06:46:46,541 INFO L226 Difference]: Without dead ends: 434 [2020-10-29 06:46:46,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-29 06:46:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 425. [2020-10-29 06:46:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-29 06:46:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-29 06:46:46,650 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 36 [2020-10-29 06:46:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:46,651 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-29 06:46:46,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:46:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-29 06:46:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 06:46:46,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:46,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:46,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:46:46,657 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:46,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1778426764, now seen corresponding path program 1 times [2020-10-29 06:46:46,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:46,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414675837] [2020-10-29 06:46:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:46,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:48,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:48,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 06:46:48,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:46:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1958 [2020-10-29 06:46:48,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:48,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:46:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:48,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:48,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:48,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 06:46:48,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:48,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:48,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:46:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:48,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:49,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:46:49,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 06:46:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:49,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:49,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:46:49,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:49,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414675837] [2020-10-29 06:46:49,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:49,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:46:49,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844287587] [2020-10-29 06:46:49,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:49,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:49,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:49,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:49,169 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 7 states. [2020-10-29 06:46:52,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:52,749 INFO L93 Difference]: Finished difference Result 1267 states and 1855 transitions. [2020-10-29 06:46:52,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:46:52,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-29 06:46:52,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:52,761 INFO L225 Difference]: With dead ends: 1267 [2020-10-29 06:46:52,761 INFO L226 Difference]: Without dead ends: 848 [2020-10-29 06:46:52,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-29 06:46:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 816. [2020-10-29 06:46:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-29 06:46:52,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1094 transitions. [2020-10-29 06:46:52,854 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1094 transitions. Word has length 108 [2020-10-29 06:46:52,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:52,855 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1094 transitions. [2020-10-29 06:46:52,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1094 transitions. [2020-10-29 06:46:52,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 06:46:52,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:52,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:52,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:46:52,866 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:52,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:52,870 INFO L82 PathProgramCache]: Analyzing trace with hash 43255336, now seen corresponding path program 1 times [2020-10-29 06:46:52,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:52,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416392464] [2020-10-29 06:46:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:53,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:53,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 06:46:53,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:53,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-10-29 06:46:53,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:53,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:53,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:53,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:46:53,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:53,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:53,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:53,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 06:46:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:53,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:53,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:54,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:54,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:46:54,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 06:46:54,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:54,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:46:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:54,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416392464] [2020-10-29 06:46:54,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:54,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:46:54,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208848552] [2020-10-29 06:46:54,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:54,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:54,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:54,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:54,318 INFO L87 Difference]: Start difference. First operand 816 states and 1094 transitions. Second operand 7 states. [2020-10-29 06:46:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:57,720 INFO L93 Difference]: Finished difference Result 2067 states and 2859 transitions. [2020-10-29 06:46:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:46:57,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-29 06:46:57,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:57,729 INFO L225 Difference]: With dead ends: 2067 [2020-10-29 06:46:57,730 INFO L226 Difference]: Without dead ends: 1257 [2020-10-29 06:46:57,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-10-29 06:46:57,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1216. [2020-10-29 06:46:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-29 06:46:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1530 transitions. [2020-10-29 06:46:57,787 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1530 transitions. Word has length 111 [2020-10-29 06:46:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:57,788 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1530 transitions. [2020-10-29 06:46:57,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1530 transitions. [2020-10-29 06:46:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-29 06:46:57,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:57,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:57,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:46:57,805 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:57,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1990972669, now seen corresponding path program 1 times [2020-10-29 06:46:57,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:57,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145115154] [2020-10-29 06:46:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:57,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:58,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:58,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 06:46:58,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-29 06:46:58,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:58,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:46:58,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 06:46:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:58,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:58,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:58,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:58,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:46:58,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:58,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:58,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:58,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:58,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:58,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:58,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:46:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:46:58,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:58,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:46:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:58,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145115154] [2020-10-29 06:46:58,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:58,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:46:58,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202709389] [2020-10-29 06:46:58,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:46:58,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:58,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:46:58,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:58,627 INFO L87 Difference]: Start difference. First operand 1216 states and 1530 transitions. Second operand 5 states. [2020-10-29 06:47:01,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:01,519 INFO L93 Difference]: Finished difference Result 2456 states and 3276 transitions. [2020-10-29 06:47:01,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:47:01,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-29 06:47:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:01,533 INFO L225 Difference]: With dead ends: 2456 [2020-10-29 06:47:01,534 INFO L226 Difference]: Without dead ends: 1624 [2020-10-29 06:47:01,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:47:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-10-29 06:47:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1608. [2020-10-29 06:47:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2020-10-29 06:47:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2077 transitions. [2020-10-29 06:47:01,609 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2077 transitions. Word has length 167 [2020-10-29 06:47:01,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:01,611 INFO L481 AbstractCegarLoop]: Abstraction has 1608 states and 2077 transitions. [2020-10-29 06:47:01,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:47:01,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2077 transitions. [2020-10-29 06:47:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-29 06:47:01,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:01,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:01,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:47:01,618 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:01,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:01,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2113459390, now seen corresponding path program 1 times [2020-10-29 06:47:01,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:01,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442430404] [2020-10-29 06:47:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:02,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-29 06:47:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2158 [2020-10-29 06:47:03,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:03,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:47:03,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:47:03,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:04,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:04,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:04,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:04,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:04,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:04,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:47:04,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:04,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:04,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:04,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:04,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:04,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:04,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 06:47:04,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:04,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:04,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 06:47:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:04,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:04,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:47:04,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:04,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 06:47:04,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:04,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:04,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:04,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:47:04,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:04,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442430404] [2020-10-29 06:47:04,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:04,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:47:04,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190149024] [2020-10-29 06:47:04,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:47:04,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:04,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:47:04,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:47:04,521 INFO L87 Difference]: Start difference. First operand 1608 states and 2077 transitions. Second operand 8 states. [2020-10-29 06:47:07,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:07,958 INFO L93 Difference]: Finished difference Result 3238 states and 4314 transitions. [2020-10-29 06:47:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:47:07,959 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-10-29 06:47:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:07,971 INFO L225 Difference]: With dead ends: 3238 [2020-10-29 06:47:07,971 INFO L226 Difference]: Without dead ends: 2014 [2020-10-29 06:47:07,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:47:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-10-29 06:47:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2001. [2020-10-29 06:47:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2020-10-29 06:47:08,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2586 transitions. [2020-10-29 06:47:08,035 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2586 transitions. Word has length 224 [2020-10-29 06:47:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:08,036 INFO L481 AbstractCegarLoop]: Abstraction has 2001 states and 2586 transitions. [2020-10-29 06:47:08,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:47:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2586 transitions. [2020-10-29 06:47:08,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 06:47:08,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:08,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:08,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:47:08,040 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:08,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:08,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1577735882, now seen corresponding path program 1 times [2020-10-29 06:47:08,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:08,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646238165] [2020-10-29 06:47:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:10,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:10,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 06:47:10,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:10,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2460 [2020-10-29 06:47:10,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:10,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:47:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:47:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 06:47:10,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:10,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:10,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:10,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:10,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:47:10,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:10,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:10,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:10,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:10,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:47:10,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:10,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:10,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:10,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:10,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:10,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 06:47:10,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:10,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:10,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:47:10,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:11,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:11,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:47:11,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:11,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 06:47:11,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:11,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:47:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:47:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 42 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:47:11,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646238165] [2020-10-29 06:47:11,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:11,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:47:11,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658393027] [2020-10-29 06:47:11,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:47:11,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:11,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:47:11,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:47:11,631 INFO L87 Difference]: Start difference. First operand 2001 states and 2586 transitions. Second operand 9 states. [2020-10-29 06:47:13,287 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-10-29 06:47:13,900 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-29 06:47:15,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:15,911 INFO L93 Difference]: Finished difference Result 4489 states and 5943 transitions. [2020-10-29 06:47:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 06:47:15,912 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 225 [2020-10-29 06:47:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:15,928 INFO L225 Difference]: With dead ends: 4489 [2020-10-29 06:47:15,928 INFO L226 Difference]: Without dead ends: 2862 [2020-10-29 06:47:15,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:47:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2020-10-29 06:47:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2787. [2020-10-29 06:47:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2787 states. [2020-10-29 06:47:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3543 transitions. [2020-10-29 06:47:16,030 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3543 transitions. Word has length 225 [2020-10-29 06:47:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:16,031 INFO L481 AbstractCegarLoop]: Abstraction has 2787 states and 3543 transitions. [2020-10-29 06:47:16,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:47:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3543 transitions. [2020-10-29 06:47:16,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 06:47:16,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:16,036 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:16,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:47:16,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:16,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:16,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1951791678, now seen corresponding path program 1 times [2020-10-29 06:47:16,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:16,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807648222] [2020-10-29 06:47:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:16,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:18,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:18,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 06:47:18,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2105 [2020-10-29 06:47:18,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:18,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:47:18,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:47:18,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:18,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:18,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:18,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:18,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:18,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:47:18,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:18,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:18,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:18,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:18,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:18,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:18,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 06:47:18,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:18,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:18,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:18,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:18,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:18,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:18,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:47:18,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:18,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:18,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:47:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:18,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807648222] [2020-10-29 06:47:18,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:18,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:18,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576982430] [2020-10-29 06:47:18,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:18,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:18,950 INFO L87 Difference]: Start difference. First operand 2787 states and 3543 transitions. Second operand 7 states. [2020-10-29 06:47:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:22,613 INFO L93 Difference]: Finished difference Result 7079 states and 9639 transitions. [2020-10-29 06:47:22,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:22,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-29 06:47:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:22,642 INFO L225 Difference]: With dead ends: 7079 [2020-10-29 06:47:22,642 INFO L226 Difference]: Without dead ends: 4676 [2020-10-29 06:47:22,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:22,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2020-10-29 06:47:22,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4566. [2020-10-29 06:47:22,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4566 states. [2020-10-29 06:47:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 5623 transitions. [2020-10-29 06:47:22,787 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 5623 transitions. Word has length 226 [2020-10-29 06:47:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:22,788 INFO L481 AbstractCegarLoop]: Abstraction has 4566 states and 5623 transitions. [2020-10-29 06:47:22,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 5623 transitions. [2020-10-29 06:47:22,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 06:47:22,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:22,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:22,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:47:22,794 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:22,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:22,794 INFO L82 PathProgramCache]: Analyzing trace with hash -473385686, now seen corresponding path program 1 times [2020-10-29 06:47:22,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:22,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275018282] [2020-10-29 06:47:22,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:22,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:23,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:23,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:23,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-29 06:47:23,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:23,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-29 06:47:23,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:23,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:23,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:47:23,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 06:47:23,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:23,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:23,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:23,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:23,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:23,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:47:23,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:23,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:23,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:23,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:23,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:23,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:23,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:23,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:23,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 06:47:23,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:23,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:23,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:23,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:23,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:23,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:23,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:23,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:47:23,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:23,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 06:47:23,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:23,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:47:23,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 06:47:24,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275018282] [2020-10-29 06:47:24,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:24,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:47:24,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351745685] [2020-10-29 06:47:24,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:47:24,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:24,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:47:24,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:47:24,099 INFO L87 Difference]: Start difference. First operand 4566 states and 5623 transitions. Second operand 6 states. [2020-10-29 06:47:28,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:28,035 INFO L93 Difference]: Finished difference Result 9571 states and 12007 transitions. [2020-10-29 06:47:28,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:47:28,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2020-10-29 06:47:28,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:28,068 INFO L225 Difference]: With dead ends: 9571 [2020-10-29 06:47:28,068 INFO L226 Difference]: Without dead ends: 5389 [2020-10-29 06:47:28,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:47:28,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5389 states. [2020-10-29 06:47:28,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5389 to 5150. [2020-10-29 06:47:28,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5150 states. [2020-10-29 06:47:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5150 states to 5150 states and 6461 transitions. [2020-10-29 06:47:28,217 INFO L78 Accepts]: Start accepts. Automaton has 5150 states and 6461 transitions. Word has length 236 [2020-10-29 06:47:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:28,218 INFO L481 AbstractCegarLoop]: Abstraction has 5150 states and 6461 transitions. [2020-10-29 06:47:28,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:47:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5150 states and 6461 transitions. [2020-10-29 06:47:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 06:47:28,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:28,225 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:28,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:47:28,225 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:28,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2135676542, now seen corresponding path program 1 times [2020-10-29 06:47:28,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:28,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907824980] [2020-10-29 06:47:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:28,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:29,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:29,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-29 06:47:29,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:29,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1505 [2020-10-29 06:47:29,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:29,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:47:29,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:47:29,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-29 06:47:29,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:29,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:29,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:29,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:29,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:29,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:47:29,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:29,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:29,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:47:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:29,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:47:30,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-29 06:47:30,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:30,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:47:30,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:47:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:47:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:47:30,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-29 06:47:30,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:47:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:47:30,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 94 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 06:47:30,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907824980] [2020-10-29 06:47:30,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:30,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:47:30,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048910350] [2020-10-29 06:47:30,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:47:30,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:30,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:47:30,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:47:30,892 INFO L87 Difference]: Start difference. First operand 5150 states and 6461 transitions. Second operand 9 states. [2020-10-29 06:47:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:36,608 INFO L93 Difference]: Finished difference Result 11060 states and 15547 transitions. [2020-10-29 06:47:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 06:47:36,609 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 256 [2020-10-29 06:47:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:36,651 INFO L225 Difference]: With dead ends: 11060 [2020-10-29 06:47:36,651 INFO L226 Difference]: Without dead ends: 7856 [2020-10-29 06:47:36,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:47:36,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7856 states. [2020-10-29 06:47:36,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7856 to 7561. [2020-10-29 06:47:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7561 states. [2020-10-29 06:47:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7561 states to 7561 states and 9915 transitions. [2020-10-29 06:47:36,890 INFO L78 Accepts]: Start accepts. Automaton has 7561 states and 9915 transitions. Word has length 256 [2020-10-29 06:47:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:36,891 INFO L481 AbstractCegarLoop]: Abstraction has 7561 states and 9915 transitions. [2020-10-29 06:47:36,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:47:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 7561 states and 9915 transitions. [2020-10-29 06:47:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 06:47:36,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:36,902 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:36,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:47:36,902 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:36,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:36,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1628334902, now seen corresponding path program 1 times [2020-10-29 06:47:36,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:36,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365168361] [2020-10-29 06:47:36,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:41,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:41,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:41,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-29 06:47:41,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:47:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 06:47:41,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:41,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 06:47:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:47:41,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-29 06:47:41,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:42,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:42,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:42,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:42,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:42,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 06:47:42,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:42,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:47:42,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:42,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:42,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:42,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 06:47:42,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:42,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:42,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:42,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:42,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:42,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:47:42,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:47:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-29 06:47:42,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:42,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:42,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:42,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:47:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:42,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:47:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:42,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:42,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:42,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 06:47:42,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 06:47:42,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:42,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 06:47:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 214 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 06:47:42,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365168361] [2020-10-29 06:47:42,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:42,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:42,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288270345] [2020-10-29 06:47:42,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:42,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:42,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:42,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:42,961 INFO L87 Difference]: Start difference. First operand 7561 states and 9915 transitions. Second operand 7 states. [2020-10-29 06:47:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:46,305 INFO L93 Difference]: Finished difference Result 15207 states and 21503 transitions. [2020-10-29 06:47:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:47:46,307 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-29 06:47:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:46,357 INFO L225 Difference]: With dead ends: 15207 [2020-10-29 06:47:46,357 INFO L226 Difference]: Without dead ends: 7832 [2020-10-29 06:47:46,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2020-10-29 06:47:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 7535. [2020-10-29 06:47:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7535 states. [2020-10-29 06:47:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7535 states to 7535 states and 9761 transitions. [2020-10-29 06:47:46,600 INFO L78 Accepts]: Start accepts. Automaton has 7535 states and 9761 transitions. Word has length 307 [2020-10-29 06:47:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:46,601 INFO L481 AbstractCegarLoop]: Abstraction has 7535 states and 9761 transitions. [2020-10-29 06:47:46,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:46,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7535 states and 9761 transitions. [2020-10-29 06:47:46,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 06:47:46,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:46,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:46,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:47:46,614 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash -483176046, now seen corresponding path program 1 times [2020-10-29 06:47:46,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:46,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046586536] [2020-10-29 06:47:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:46,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:46,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:48,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:48,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-29 06:47:48,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2266 [2020-10-29 06:47:48,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:48,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:47:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:47:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:49,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:49,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:49,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:49,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:49,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:47:49,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:49,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:49,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:49,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:49,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:49,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:49,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:49,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 06:47:49,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:49,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:49,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:49,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:49,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:47:49,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:49,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 06:47:49,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:49,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:49,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:47:49,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:49,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:47:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:49,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:49,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:47:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 06:47:49,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:49,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:47:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-29 06:47:49,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046586536] [2020-10-29 06:47:49,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:49,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:49,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22095781] [2020-10-29 06:47:49,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:49,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:49,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:49,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:49,643 INFO L87 Difference]: Start difference. First operand 7535 states and 9761 transitions. Second operand 7 states. [2020-10-29 06:47:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:53,393 INFO L93 Difference]: Finished difference Result 15196 states and 20249 transitions. [2020-10-29 06:47:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:53,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-29 06:47:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:53,428 INFO L225 Difference]: With dead ends: 15196 [2020-10-29 06:47:53,428 INFO L226 Difference]: Without dead ends: 9217 [2020-10-29 06:47:53,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9217 states. [2020-10-29 06:47:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9217 to 8913. [2020-10-29 06:47:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8913 states. [2020-10-29 06:47:53,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8913 states to 8913 states and 11410 transitions. [2020-10-29 06:47:53,776 INFO L78 Accepts]: Start accepts. Automaton has 8913 states and 11410 transitions. Word has length 325 [2020-10-29 06:47:53,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:53,777 INFO L481 AbstractCegarLoop]: Abstraction has 8913 states and 11410 transitions. [2020-10-29 06:47:53,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8913 states and 11410 transitions. [2020-10-29 06:47:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 06:47:53,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:53,793 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:53,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:47:53,794 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:53,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1496859922, now seen corresponding path program 1 times [2020-10-29 06:47:53,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:53,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140157110] [2020-10-29 06:47:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:53,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:58,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:58,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-29 06:47:58,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:47:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 06:47:58,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:58,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:47:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:47:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:59,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:59,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:59,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:59,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:47:59,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:59,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:59,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:59,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:59,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:47:59,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:59,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:47:59,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:59,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:59,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:59,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:59,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:59,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:47:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:59,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:59,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:59,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:59,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:59,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 06:47:59,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:59,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:59,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:47:59,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:59,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:47:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:59,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:59,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:47:59,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:59,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 06:47:59,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:59,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:59,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:47:59,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:47:59,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140157110] [2020-10-29 06:47:59,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:59,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:59,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717886045] [2020-10-29 06:47:59,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:59,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:59,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:59,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:59,562 INFO L87 Difference]: Start difference. First operand 8913 states and 11410 transitions. Second operand 7 states. [2020-10-29 06:48:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:04,238 INFO L93 Difference]: Finished difference Result 21105 states and 27928 transitions. [2020-10-29 06:48:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:04,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-29 06:48:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:04,333 INFO L225 Difference]: With dead ends: 21105 [2020-10-29 06:48:04,334 INFO L226 Difference]: Without dead ends: 12576 [2020-10-29 06:48:04,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:04,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12576 states. [2020-10-29 06:48:04,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12576 to 12178. [2020-10-29 06:48:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12178 states. [2020-10-29 06:48:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12178 states to 12178 states and 15518 transitions. [2020-10-29 06:48:04,687 INFO L78 Accepts]: Start accepts. Automaton has 12178 states and 15518 transitions. Word has length 325 [2020-10-29 06:48:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:04,688 INFO L481 AbstractCegarLoop]: Abstraction has 12178 states and 15518 transitions. [2020-10-29 06:48:04,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 12178 states and 15518 transitions. [2020-10-29 06:48:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-29 06:48:04,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:04,703 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:04,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:48:04,704 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash 491159673, now seen corresponding path program 1 times [2020-10-29 06:48:04,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:04,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794877283] [2020-10-29 06:48:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:05,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:09,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:09,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-29 06:48:09,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:48:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 06:48:09,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:09,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:48:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:48:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:09,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:09,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:09,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:09,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:09,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:09,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:09,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:09,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:09,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:09,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:09,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:09,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:09,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:09,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:48:09,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:09,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:09,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:09,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:10,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:10,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:10,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:10,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:48:10,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 06:48:10,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:10,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:48:10,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:10,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:48:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:10,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:10,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:48:10,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 06:48:10,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:10,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:10,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:10,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:10,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:48:10,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:10,277 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 242 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 06:48:10,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794877283] [2020-10-29 06:48:10,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:10,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:10,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554633749] [2020-10-29 06:48:10,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:10,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:10,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:10,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:10,280 INFO L87 Difference]: Start difference. First operand 12178 states and 15518 transitions. Second operand 7 states. [2020-10-29 06:48:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:13,931 INFO L93 Difference]: Finished difference Result 24424 states and 31138 transitions. [2020-10-29 06:48:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:13,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-29 06:48:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:13,971 INFO L225 Difference]: With dead ends: 24424 [2020-10-29 06:48:13,971 INFO L226 Difference]: Without dead ends: 12440 [2020-10-29 06:48:13,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:48:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12440 states. [2020-10-29 06:48:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12440 to 12396. [2020-10-29 06:48:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12396 states. [2020-10-29 06:48:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12396 states to 12396 states and 15564 transitions. [2020-10-29 06:48:14,354 INFO L78 Accepts]: Start accepts. Automaton has 12396 states and 15564 transitions. Word has length 326 [2020-10-29 06:48:14,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:14,355 INFO L481 AbstractCegarLoop]: Abstraction has 12396 states and 15564 transitions. [2020-10-29 06:48:14,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:14,355 INFO L276 IsEmpty]: Start isEmpty. Operand 12396 states and 15564 transitions. [2020-10-29 06:48:14,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-29 06:48:14,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:14,369 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:14,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:48:14,370 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:14,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:14,370 INFO L82 PathProgramCache]: Analyzing trace with hash -998122861, now seen corresponding path program 1 times [2020-10-29 06:48:14,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:14,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713270946] [2020-10-29 06:48:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:16,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 347 [2020-10-29 06:48:16,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1570 [2020-10-29 06:48:16,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:16,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-29 06:48:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:48:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:16,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:16,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:16,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:16,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:16,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:16,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:16,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:48:16,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:16,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:16,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:16,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:16,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:48:16,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:16,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 06:48:16,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:16,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:16,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:48:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:16,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 06:48:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:16,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:16,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:48:16,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 06:48:16,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:16,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:16,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:48:16,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-29 06:48:16,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713270946] [2020-10-29 06:48:16,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:16,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:48:16,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431101355] [2020-10-29 06:48:16,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:48:16,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:16,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:48:16,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:48:16,628 INFO L87 Difference]: Start difference. First operand 12396 states and 15564 transitions. Second operand 8 states. [2020-10-29 06:48:21,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:21,396 INFO L93 Difference]: Finished difference Result 25768 states and 32415 transitions. [2020-10-29 06:48:21,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 06:48:21,397 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 331 [2020-10-29 06:48:21,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:21,440 INFO L225 Difference]: With dead ends: 25768 [2020-10-29 06:48:21,440 INFO L226 Difference]: Without dead ends: 13756 [2020-10-29 06:48:21,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:48:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13756 states. [2020-10-29 06:48:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13756 to 13544. [2020-10-29 06:48:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13544 states. [2020-10-29 06:48:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13544 states to 13544 states and 16882 transitions. [2020-10-29 06:48:21,755 INFO L78 Accepts]: Start accepts. Automaton has 13544 states and 16882 transitions. Word has length 331 [2020-10-29 06:48:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:21,756 INFO L481 AbstractCegarLoop]: Abstraction has 13544 states and 16882 transitions. [2020-10-29 06:48:21,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:48:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 13544 states and 16882 transitions. [2020-10-29 06:48:21,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-29 06:48:21,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:21,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:21,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:48:21,769 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:21,770 INFO L82 PathProgramCache]: Analyzing trace with hash -369814998, now seen corresponding path program 1 times [2020-10-29 06:48:21,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:21,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722632898] [2020-10-29 06:48:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:21,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:22,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-29 06:48:23,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-29 06:48:23,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-29 06:48:23,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:48:23,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:23,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:23,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:23,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:23,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:23,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:48:23,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:23,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 06:48:23,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:48:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:48:23,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:23,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 06:48:23,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:23,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:48:23,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:48:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:23,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:23,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:48:23,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:23,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 06:48:23,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:23,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:48:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-29 06:48:23,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722632898] [2020-10-29 06:48:23,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:23,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:48:23,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123366493] [2020-10-29 06:48:23,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:48:23,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:23,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:48:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:48:23,600 INFO L87 Difference]: Start difference. First operand 13544 states and 16882 transitions. Second operand 8 states. [2020-10-29 06:48:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:27,141 INFO L93 Difference]: Finished difference Result 24976 states and 31340 transitions. [2020-10-29 06:48:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:48:27,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 337 [2020-10-29 06:48:27,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:27,175 INFO L225 Difference]: With dead ends: 24976 [2020-10-29 06:48:27,175 INFO L226 Difference]: Without dead ends: 13566 [2020-10-29 06:48:27,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:48:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13566 states. [2020-10-29 06:48:27,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13566 to 13162. [2020-10-29 06:48:27,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13162 states. [2020-10-29 06:48:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13162 states to 13162 states and 15917 transitions. [2020-10-29 06:48:27,613 INFO L78 Accepts]: Start accepts. Automaton has 13162 states and 15917 transitions. Word has length 337 [2020-10-29 06:48:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:27,615 INFO L481 AbstractCegarLoop]: Abstraction has 13162 states and 15917 transitions. [2020-10-29 06:48:27,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:48:27,615 INFO L276 IsEmpty]: Start isEmpty. Operand 13162 states and 15917 transitions. [2020-10-29 06:48:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-29 06:48:27,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:27,629 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:27,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:48:27,629 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:27,630 INFO L82 PathProgramCache]: Analyzing trace with hash 68817561, now seen corresponding path program 1 times [2020-10-29 06:48:27,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:27,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319516456] [2020-10-29 06:48:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:27,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-29 06:48:29,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:29,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1484 [2020-10-29 06:48:29,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:48:29,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 06:48:29,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:48:29,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:29,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:29,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:29,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:48:29,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:29,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:29,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:29,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 06:48:29,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:48:29,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:29,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 06:48:29,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:29,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 06:48:29,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:29,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:48:29,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:48:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:29,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:48:29,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 06:48:29,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:48:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:29,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 166 proven. 80 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:48:29,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319516456] [2020-10-29 06:48:29,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:29,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:29,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909981245] [2020-10-29 06:48:29,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:29,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:29,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:29,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:29,830 INFO L87 Difference]: Start difference. First operand 13162 states and 15917 transitions. Second operand 7 states. [2020-10-29 06:48:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:33,746 INFO L93 Difference]: Finished difference Result 26221 states and 31717 transitions. [2020-10-29 06:48:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:48:33,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2020-10-29 06:48:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:33,787 INFO L225 Difference]: With dead ends: 26221 [2020-10-29 06:48:33,787 INFO L226 Difference]: Without dead ends: 13443 [2020-10-29 06:48:33,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:33,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13443 states. [2020-10-29 06:48:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13443 to 13400. [2020-10-29 06:48:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13400 states. [2020-10-29 06:48:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13400 states to 13400 states and 16009 transitions. [2020-10-29 06:48:34,097 INFO L78 Accepts]: Start accepts. Automaton has 13400 states and 16009 transitions. Word has length 342 [2020-10-29 06:48:34,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:34,098 INFO L481 AbstractCegarLoop]: Abstraction has 13400 states and 16009 transitions. [2020-10-29 06:48:34,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:34,099 INFO L276 IsEmpty]: Start isEmpty. Operand 13400 states and 16009 transitions. [2020-10-29 06:48:34,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-29 06:48:34,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:34,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:48:34,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:48:34,116 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:34,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:34,116 INFO L82 PathProgramCache]: Analyzing trace with hash 909881751, now seen corresponding path program 1 times [2020-10-29 06:48:34,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:34,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924996345] [2020-10-29 06:48:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:34,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 06:48:34,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:34,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-29 06:48:34,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:34,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:34,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-29 06:48:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 06:48:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:34,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:34,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:34,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:48:34,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:34,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:34,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:34,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:34,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:34,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:48:34,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:34,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:34,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:35,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:35,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:48:35,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:48:35,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:35,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 06:48:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-29 06:48:35,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924996345] [2020-10-29 06:48:35,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:35,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:48:35,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926882901] [2020-10-29 06:48:35,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:48:35,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:35,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:48:35,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:48:35,132 INFO L87 Difference]: Start difference. First operand 13400 states and 16009 transitions. Second operand 5 states. [2020-10-29 06:48:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:38,514 INFO L93 Difference]: Finished difference Result 27962 states and 33915 transitions. [2020-10-29 06:48:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:38,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-29 06:48:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:38,559 INFO L225 Difference]: With dead ends: 27962 [2020-10-29 06:48:38,560 INFO L226 Difference]: Without dead ends: 16698 [2020-10-29 06:48:38,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16698 states. [2020-10-29 06:48:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16698 to 16477. [2020-10-29 06:48:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16477 states. [2020-10-29 06:48:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16477 states to 16477 states and 19733 transitions. [2020-10-29 06:48:38,930 INFO L78 Accepts]: Start accepts. Automaton has 16477 states and 19733 transitions. Word has length 342 [2020-10-29 06:48:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:38,931 INFO L481 AbstractCegarLoop]: Abstraction has 16477 states and 19733 transitions. [2020-10-29 06:48:38,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:48:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 16477 states and 19733 transitions. [2020-10-29 06:48:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-29 06:48:38,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:38,947 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:38,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:48:38,948 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1725294958, now seen corresponding path program 1 times [2020-10-29 06:48:38,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:38,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244627079] [2020-10-29 06:48:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:40,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:40,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-29 06:48:40,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-29 06:48:40,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:40,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 06:48:40,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:48:40,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:40,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:40,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:40,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:40,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:40,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:40,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:40,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:40,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:40,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:40,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:40,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:40,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:40,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:48:40,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:40,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:48:40,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:40,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:40,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:40,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:40,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:40,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:48:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:40,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:40,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:48:40,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 06:48:40,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:40,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:40,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:48:40,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-29 06:48:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:40,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:41,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:48:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 06:48:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:41,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:41,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:48:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:41,464 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 271 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 06:48:41,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244627079] [2020-10-29 06:48:41,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:41,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:41,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439948862] [2020-10-29 06:48:41,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:41,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:41,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:41,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:41,467 INFO L87 Difference]: Start difference. First operand 16477 states and 19733 transitions. Second operand 7 states. [2020-10-29 06:48:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:45,361 INFO L93 Difference]: Finished difference Result 33592 states and 40358 transitions. [2020-10-29 06:48:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:48:45,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-29 06:48:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:45,396 INFO L225 Difference]: With dead ends: 33592 [2020-10-29 06:48:45,396 INFO L226 Difference]: Without dead ends: 17303 [2020-10-29 06:48:45,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:48:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17303 states. [2020-10-29 06:48:45,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17303 to 17239. [2020-10-29 06:48:45,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17239 states. [2020-10-29 06:48:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17239 states to 17239 states and 20468 transitions. [2020-10-29 06:48:45,748 INFO L78 Accepts]: Start accepts. Automaton has 17239 states and 20468 transitions. Word has length 365 [2020-10-29 06:48:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:45,748 INFO L481 AbstractCegarLoop]: Abstraction has 17239 states and 20468 transitions. [2020-10-29 06:48:45,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 17239 states and 20468 transitions. [2020-10-29 06:48:45,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-29 06:48:45,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:45,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:45,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:48:45,769 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:45,770 INFO L82 PathProgramCache]: Analyzing trace with hash 334479900, now seen corresponding path program 1 times [2020-10-29 06:48:45,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:45,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991991932] [2020-10-29 06:48:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:45,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:46,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:46,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:50,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-29 06:48:50,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:48:50,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 06:48:50,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:50,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:50,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:50,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:48:50,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:48:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:50,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:50,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:50,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:48:50,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:50,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:50,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:48:51,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:48:51,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:48:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:48:51,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:51,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 06:48:51,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:51,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:48:51,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:48:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 06:48:51,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:51,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 06:48:51,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:51,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 06:48:51,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 06:48:51,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991991932] [2020-10-29 06:48:51,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:51,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:51,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364192432] [2020-10-29 06:48:51,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:51,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:51,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:51,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:51,452 INFO L87 Difference]: Start difference. First operand 17239 states and 20468 transitions. Second operand 7 states. [2020-10-29 06:48:55,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:55,288 INFO L93 Difference]: Finished difference Result 39071 states and 46355 transitions. [2020-10-29 06:48:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:48:55,289 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-29 06:48:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:55,328 INFO L225 Difference]: With dead ends: 39071 [2020-10-29 06:48:55,328 INFO L226 Difference]: Without dead ends: 22216 [2020-10-29 06:48:55,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:48:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22216 states. [2020-10-29 06:48:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22216 to 21583. [2020-10-29 06:48:55,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21583 states. [2020-10-29 06:48:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21583 states to 21583 states and 25289 transitions. [2020-10-29 06:48:55,761 INFO L78 Accepts]: Start accepts. Automaton has 21583 states and 25289 transitions. Word has length 370 [2020-10-29 06:48:55,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:55,761 INFO L481 AbstractCegarLoop]: Abstraction has 21583 states and 25289 transitions. [2020-10-29 06:48:55,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 21583 states and 25289 transitions. [2020-10-29 06:48:55,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-29 06:48:55,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:55,776 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:55,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:48:55,777 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:55,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:55,777 INFO L82 PathProgramCache]: Analyzing trace with hash 214441259, now seen corresponding path program 1 times [2020-10-29 06:48:55,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:55,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886657824] [2020-10-29 06:48:55,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:55,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:56,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:57,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:00,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:00,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-29 06:49:00,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:49:00,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5099 [2020-10-29 06:49:00,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:00,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 216 [2020-10-29 06:49:00,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:49:00,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:01,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:01,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:01,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:01,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:01,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:01,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:01,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:01,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:01,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:01,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:01,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:01,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:01,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:01,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:01,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:01,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:01,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 06:49:01,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:01,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:01,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:01,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:01,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:01,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:49:01,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:01,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:49:01,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:01,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:01,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:49:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-29 06:49:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:01,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:01,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:01,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 06:49:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-29 06:49:01,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:01,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:01,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 06:49:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 06:49:01,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886657824] [2020-10-29 06:49:01,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:01,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:01,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808613697] [2020-10-29 06:49:01,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:01,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:01,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:01,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:01,700 INFO L87 Difference]: Start difference. First operand 21583 states and 25289 transitions. Second operand 7 states. [2020-10-29 06:49:07,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:07,021 INFO L93 Difference]: Finished difference Result 43370 states and 51092 transitions. [2020-10-29 06:49:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:07,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-29 06:49:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:07,177 INFO L225 Difference]: With dead ends: 43370 [2020-10-29 06:49:07,177 INFO L226 Difference]: Without dead ends: 23527 [2020-10-29 06:49:07,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23527 states. [2020-10-29 06:49:07,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23527 to 22154. [2020-10-29 06:49:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22154 states. [2020-10-29 06:49:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22154 states to 22154 states and 25828 transitions. [2020-10-29 06:49:07,500 INFO L78 Accepts]: Start accepts. Automaton has 22154 states and 25828 transitions. Word has length 374 [2020-10-29 06:49:07,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:07,501 INFO L481 AbstractCegarLoop]: Abstraction has 22154 states and 25828 transitions. [2020-10-29 06:49:07,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:07,501 INFO L276 IsEmpty]: Start isEmpty. Operand 22154 states and 25828 transitions. [2020-10-29 06:49:07,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-29 06:49:07,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:07,515 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:07,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:49:07,515 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:07,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1549901843, now seen corresponding path program 1 times [2020-10-29 06:49:07,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:07,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558507209] [2020-10-29 06:49:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:08,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:08,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-29 06:49:08,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:49:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1260 [2020-10-29 06:49:08,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:08,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:49:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-29 06:49:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 06:49:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:09,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:09,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:09,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:09,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:09,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:49:09,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:09,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:09,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:09,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:09,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:09,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:09,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:09,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:49:09,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:09,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:09,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:09,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:09,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:09,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:09,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:09,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:09,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:49:09,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:09,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-29 06:49:09,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:09,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:09,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:09,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 06:49:09,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:09,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:49:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:09,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:09,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 06:49:09,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 06:49:09,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:09,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 06:49:09,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 194 proven. 29 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-29 06:49:09,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558507209] [2020-10-29 06:49:09,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:09,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:09,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391277114] [2020-10-29 06:49:09,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:09,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:09,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:09,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:09,723 INFO L87 Difference]: Start difference. First operand 22154 states and 25828 transitions. Second operand 7 states. [2020-10-29 06:49:14,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:14,547 INFO L93 Difference]: Finished difference Result 46676 states and 54356 transitions. [2020-10-29 06:49:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:14,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2020-10-29 06:49:14,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:14,591 INFO L225 Difference]: With dead ends: 46676 [2020-10-29 06:49:14,591 INFO L226 Difference]: Without dead ends: 24906 [2020-10-29 06:49:14,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:14,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24906 states. [2020-10-29 06:49:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24906 to 24820. [2020-10-29 06:49:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24820 states. [2020-10-29 06:49:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24820 states to 24820 states and 28618 transitions. [2020-10-29 06:49:14,962 INFO L78 Accepts]: Start accepts. Automaton has 24820 states and 28618 transitions. Word has length 376 [2020-10-29 06:49:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:14,962 INFO L481 AbstractCegarLoop]: Abstraction has 24820 states and 28618 transitions. [2020-10-29 06:49:14,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24820 states and 28618 transitions. [2020-10-29 06:49:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-29 06:49:15,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:15,108 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:15,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:49:15,108 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:15,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:15,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1135896573, now seen corresponding path program 1 times [2020-10-29 06:49:15,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:15,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304111557] [2020-10-29 06:49:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:17,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:17,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-29 06:49:17,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:49:17,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2759 [2020-10-29 06:49:17,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:17,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:17,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:49:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-29 06:49:17,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 06:49:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:18,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:18,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:18,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:18,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:18,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:49:18,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:18,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:18,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:18,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:18,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:18,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:18,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:18,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:18,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:18,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:18,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:49:18,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:18,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:18,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:18,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:18,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:18,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:49:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 06:49:18,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:18,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:49:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-29 06:49:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:18,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:18,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 06:49:18,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:18,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-29 06:49:18,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:18,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:18,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 06:49:18,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 290 proven. 29 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 06:49:18,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304111557] [2020-10-29 06:49:18,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:18,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:49:18,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692918778] [2020-10-29 06:49:18,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:49:18,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:18,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:49:18,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:49:18,617 INFO L87 Difference]: Start difference. First operand 24820 states and 28618 transitions. Second operand 6 states. [2020-10-29 06:49:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:21,697 INFO L93 Difference]: Finished difference Result 28375 states and 32602 transitions. [2020-10-29 06:49:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:49:21,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 410 [2020-10-29 06:49:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:21,858 INFO L225 Difference]: With dead ends: 28375 [2020-10-29 06:49:21,858 INFO L226 Difference]: Without dead ends: 28372 [2020-10-29 06:49:21,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:49:21,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28372 states. [2020-10-29 06:49:22,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28372 to 28086. [2020-10-29 06:49:22,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28086 states. [2020-10-29 06:49:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28086 states to 28086 states and 32301 transitions. [2020-10-29 06:49:22,287 INFO L78 Accepts]: Start accepts. Automaton has 28086 states and 32301 transitions. Word has length 410 [2020-10-29 06:49:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:22,287 INFO L481 AbstractCegarLoop]: Abstraction has 28086 states and 32301 transitions. [2020-10-29 06:49:22,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:49:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 28086 states and 32301 transitions. [2020-10-29 06:49:22,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-29 06:49:22,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:22,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:22,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:49:22,299 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:22,299 INFO L82 PathProgramCache]: Analyzing trace with hash 975548958, now seen corresponding path program 1 times [2020-10-29 06:49:22,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:22,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244381095] [2020-10-29 06:49:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:22,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:23,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:24,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:24,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-29 06:49:24,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:24,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2542 [2020-10-29 06:49:24,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:24,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:24,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-29 06:49:24,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:49:24,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:25,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:25,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:25,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:25,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:49:25,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:25,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:25,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:25,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:25,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:25,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:25,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:49:25,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 06:49:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:25,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:49:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:25,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:25,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:49:25,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 06:49:25,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:25,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:49:25,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-29 06:49:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:25,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 06:49:25,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:25,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:49:25,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:25,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 06:49:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 06:49:25,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244381095] [2020-10-29 06:49:25,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:25,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:25,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625011675] [2020-10-29 06:49:25,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:25,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:25,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:25,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:25,552 INFO L87 Difference]: Start difference. First operand 28086 states and 32301 transitions. Second operand 7 states. [2020-10-29 06:49:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:29,459 INFO L93 Difference]: Finished difference Result 53373 states and 61494 transitions. [2020-10-29 06:49:29,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:29,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-29 06:49:29,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:29,524 INFO L225 Difference]: With dead ends: 53373 [2020-10-29 06:49:29,524 INFO L226 Difference]: Without dead ends: 28757 [2020-10-29 06:49:29,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:29,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28757 states. [2020-10-29 06:49:29,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28757 to 28088. [2020-10-29 06:49:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28088 states. [2020-10-29 06:49:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28088 states to 28088 states and 32308 transitions. [2020-10-29 06:49:30,021 INFO L78 Accepts]: Start accepts. Automaton has 28088 states and 32308 transitions. Word has length 413 [2020-10-29 06:49:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:30,022 INFO L481 AbstractCegarLoop]: Abstraction has 28088 states and 32308 transitions. [2020-10-29 06:49:30,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 28088 states and 32308 transitions. [2020-10-29 06:49:30,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-29 06:49:30,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:30,040 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:30,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:49:30,041 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:30,042 INFO L82 PathProgramCache]: Analyzing trace with hash 332754801, now seen corresponding path program 1 times [2020-10-29 06:49:30,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:30,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778083480] [2020-10-29 06:49:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 437 [2020-10-29 06:49:35,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:49:35,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-29 06:49:35,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 06:49:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 06:49:35,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:35,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:49:35,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:35,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:35,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:49:35,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 06:49:35,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:49:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:49:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 06:49:35,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 06:49:35,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:35,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 06:49:35,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-29 06:49:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:36,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:49:36,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 06:49:36,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 06:49:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:49:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 211 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 06:49:36,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778083480] [2020-10-29 06:49:36,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:36,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:36,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146580150] [2020-10-29 06:49:36,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:36,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:36,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:36,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:36,453 INFO L87 Difference]: Start difference. First operand 28088 states and 32308 transitions. Second operand 7 states. [2020-10-29 06:49:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:40,379 INFO L93 Difference]: Finished difference Result 54318 states and 62620 transitions. [2020-10-29 06:49:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:49:40,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-29 06:49:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:40,427 INFO L225 Difference]: With dead ends: 54318 [2020-10-29 06:49:40,428 INFO L226 Difference]: Without dead ends: 29494 [2020-10-29 06:49:40,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:49:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29494 states. [2020-10-29 06:49:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29494 to 28258. [2020-10-29 06:49:40,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28258 states. [2020-10-29 06:49:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28258 states to 28258 states and 32391 transitions. [2020-10-29 06:49:40,873 INFO L78 Accepts]: Start accepts. Automaton has 28258 states and 32391 transitions. Word has length 421 [2020-10-29 06:49:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:40,874 INFO L481 AbstractCegarLoop]: Abstraction has 28258 states and 32391 transitions. [2020-10-29 06:49:40,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 28258 states and 32391 transitions. [2020-10-29 06:49:40,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-29 06:49:40,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:40,888 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:40,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:49:40,889 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:40,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:40,889 INFO L82 PathProgramCache]: Analyzing trace with hash -576816809, now seen corresponding path program 1 times [2020-10-29 06:49:40,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:40,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241961166] [2020-10-29 06:49:40,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:41,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:43,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-29 06:49:43,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2344 [2020-10-29 06:49:43,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:43,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-29 06:49:43,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-29 06:49:43,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:43,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:43,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:43,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:43,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:43,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:43,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:43,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:43,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:43,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:43,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:43,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:49:43,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:43,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:49:43,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:43,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:43,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:43,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:43,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:49:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:43,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:43,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:43,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 06:49:43,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:43,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 06:49:43,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:43,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:43,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:43,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:49:43,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:43,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-29 06:49:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:43,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:43,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 06:49:43,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 06:49:43,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:43,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:43,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 06:49:43,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 329 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 06:49:44,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241961166] [2020-10-29 06:49:44,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:44,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:44,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111386339] [2020-10-29 06:49:44,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:44,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:44,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:44,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:44,188 INFO L87 Difference]: Start difference. First operand 28258 states and 32391 transitions. Second operand 7 states. [2020-10-29 06:49:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:50,428 INFO L93 Difference]: Finished difference Result 55032 states and 63158 transitions. [2020-10-29 06:49:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:49:50,430 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-29 06:49:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:50,475 INFO L225 Difference]: With dead ends: 55032 [2020-10-29 06:49:50,475 INFO L226 Difference]: Without dead ends: 29856 [2020-10-29 06:49:50,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:50,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29856 states. [2020-10-29 06:49:50,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29856 to 28239. [2020-10-29 06:49:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28239 states. [2020-10-29 06:49:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28239 states to 28239 states and 32187 transitions. [2020-10-29 06:49:50,854 INFO L78 Accepts]: Start accepts. Automaton has 28239 states and 32187 transitions. Word has length 445 [2020-10-29 06:49:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:50,855 INFO L481 AbstractCegarLoop]: Abstraction has 28239 states and 32187 transitions. [2020-10-29 06:49:50,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 28239 states and 32187 transitions. [2020-10-29 06:49:50,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-29 06:49:50,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:50,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:50,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 06:49:50,867 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:50,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:50,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1426504943, now seen corresponding path program 1 times [2020-10-29 06:49:50,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:50,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921311932] [2020-10-29 06:49:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:52,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:52,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-29 06:49:52,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:52,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1299 [2020-10-29 06:49:52,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:52,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:52,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:52,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 334 [2020-10-29 06:49:52,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:49:52,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:52,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:52,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:52,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:52,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:52,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:52,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:52,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:52,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:52,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:52,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:52,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:52,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:49:52,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:49:52,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:52,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:52,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:52,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:49:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:52,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:52,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:49:52,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:52,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:49:52,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:52,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:52,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:52,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:52,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:52,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:49:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:52,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:52,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 06:49:52,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 06:49:52,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:52,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 06:49:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-10-29 06:49:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:52,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:52,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:49:52,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:49:52,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:52,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:49:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 387 proven. 2 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-29 06:49:53,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921311932] [2020-10-29 06:49:53,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:53,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:53,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599507993] [2020-10-29 06:49:53,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:53,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:53,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:53,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:53,168 INFO L87 Difference]: Start difference. First operand 28239 states and 32187 transitions. Second operand 7 states. [2020-10-29 06:49:57,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:57,559 INFO L93 Difference]: Finished difference Result 56394 states and 64270 transitions. [2020-10-29 06:49:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:49:57,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 450 [2020-10-29 06:49:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:57,605 INFO L225 Difference]: With dead ends: 56394 [2020-10-29 06:49:57,605 INFO L226 Difference]: Without dead ends: 27946 [2020-10-29 06:49:57,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:57,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27946 states. [2020-10-29 06:49:58,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27946 to 24592. [2020-10-29 06:49:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24592 states. [2020-10-29 06:49:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24592 states to 24592 states and 27779 transitions. [2020-10-29 06:49:58,154 INFO L78 Accepts]: Start accepts. Automaton has 24592 states and 27779 transitions. Word has length 450 [2020-10-29 06:49:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:58,154 INFO L481 AbstractCegarLoop]: Abstraction has 24592 states and 27779 transitions. [2020-10-29 06:49:58,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 24592 states and 27779 transitions. [2020-10-29 06:49:58,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-29 06:49:58,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:58,166 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:58,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 06:49:58,166 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:58,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1861424144, now seen corresponding path program 1 times [2020-10-29 06:49:58,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:58,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875075264] [2020-10-29 06:49:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:58,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:58,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:02,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:02,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-29 06:50:02,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:50:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4141 [2020-10-29 06:50:02,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:02,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:50:02,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:50:02,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-29 06:50:02,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:02,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:02,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:02,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:02,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:02,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:02,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:50:02,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:02,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:02,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:50:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:02,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:02,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:02,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:02,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:50:02,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:50:02,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:02,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:02,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:50:02,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:50:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:02,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:02,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:50:02,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:50:02,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:02,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:50:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:50:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:02,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:50:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:02,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:03,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:03,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:03,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-29 06:50:03,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:50:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 06:50:03,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:03,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:03,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:03,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:50:03,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 06:50:03,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:03,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-29 06:50:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:03,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:03,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:03,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 06:50:03,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:03,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 06:50:03,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:03,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:03,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 06:50:03,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:03,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 201 proven. 290 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-29 06:50:03,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875075264] [2020-10-29 06:50:03,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:03,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:50:03,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191364199] [2020-10-29 06:50:03,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:50:03,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:03,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:50:03,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:50:03,538 INFO L87 Difference]: Start difference. First operand 24592 states and 27779 transitions. Second operand 10 states. [2020-10-29 06:50:03,745 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-29 06:50:08,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:08,817 INFO L93 Difference]: Finished difference Result 50389 states and 57686 transitions. [2020-10-29 06:50:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 06:50:08,818 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 456 [2020-10-29 06:50:08,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:08,874 INFO L225 Difference]: With dead ends: 50389 [2020-10-29 06:50:08,874 INFO L226 Difference]: Without dead ends: 28879 [2020-10-29 06:50:08,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-10-29 06:50:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28879 states. [2020-10-29 06:50:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28879 to 27892. [2020-10-29 06:50:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27892 states. [2020-10-29 06:50:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27892 states to 27892 states and 31548 transitions. [2020-10-29 06:50:09,399 INFO L78 Accepts]: Start accepts. Automaton has 27892 states and 31548 transitions. Word has length 456 [2020-10-29 06:50:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:09,399 INFO L481 AbstractCegarLoop]: Abstraction has 27892 states and 31548 transitions. [2020-10-29 06:50:09,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:50:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 27892 states and 31548 transitions. [2020-10-29 06:50:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-29 06:50:09,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:09,409 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:09,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 06:50:09,409 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:09,409 INFO L82 PathProgramCache]: Analyzing trace with hash 54019451, now seen corresponding path program 1 times [2020-10-29 06:50:09,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:09,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376485308] [2020-10-29 06:50:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:09,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:09,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:09,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-29 06:50:09,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-29 06:50:09,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:09,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:50:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 447 [2020-10-29 06:50:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 06:50:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:10,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:50:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:10,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:10,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:50:10,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:50:10,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:10,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:10,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:50:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:10,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:10,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:50:10,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:10,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 06:50:10,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:10,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:10,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:10,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:10,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:10,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:50:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:10,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:10,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:10,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:50:10,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 06:50:10,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:10,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:50:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:50:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:10,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-29 06:50:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:10,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:50:10,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 06:50:10,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:50:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 06:50:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:50:10,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:50:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:50:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:50:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 06:50:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:50:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-29 06:50:10,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376485308] [2020-10-29 06:50:10,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:50:10,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:50:10,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034850523] [2020-10-29 06:50:10,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:50:10,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:50:10,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:50:10,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:50:10,710 INFO L87 Difference]: Start difference. First operand 27892 states and 31548 transitions. Second operand 5 states. [2020-10-29 06:50:14,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:50:14,032 INFO L93 Difference]: Finished difference Result 30265 states and 34175 transitions. [2020-10-29 06:50:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:50:14,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 469 [2020-10-29 06:50:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:50:14,082 INFO L225 Difference]: With dead ends: 30265 [2020-10-29 06:50:14,082 INFO L226 Difference]: Without dead ends: 30262 [2020-10-29 06:50:14,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:50:14,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30262 states. [2020-10-29 06:50:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30262 to 28272. [2020-10-29 06:50:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28272 states. [2020-10-29 06:50:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28272 states to 28272 states and 32010 transitions. [2020-10-29 06:50:14,631 INFO L78 Accepts]: Start accepts. Automaton has 28272 states and 32010 transitions. Word has length 469 [2020-10-29 06:50:14,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:50:14,631 INFO L481 AbstractCegarLoop]: Abstraction has 28272 states and 32010 transitions. [2020-10-29 06:50:14,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:50:14,632 INFO L276 IsEmpty]: Start isEmpty. Operand 28272 states and 32010 transitions. [2020-10-29 06:50:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2020-10-29 06:50:14,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:50:14,650 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:50:14,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 06:50:14,650 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:50:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:50:14,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1513673124, now seen corresponding path program 1 times [2020-10-29 06:50:14,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:50:14,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650339670] [2020-10-29 06:50:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:50:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:50:14,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:50:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking...