/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/Problem18_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:38:01,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:38:01,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:38:01,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:38:01,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:38:01,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:38:01,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:38:01,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:38:01,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:38:01,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:38:01,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:38:01,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:38:01,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:38:01,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:38:01,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:38:01,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:38:01,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:38:01,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:38:01,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:38:01,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:38:01,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:38:01,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:38:01,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:38:01,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:38:01,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:38:01,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:38:01,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:38:01,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:38:01,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:38:01,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:38:01,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:38:01,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:38:01,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:38:01,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:38:01,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:38:01,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:38:01,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:38:01,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:38:01,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:38:01,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:38:01,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:38:01,306 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 08:38:01,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:38:01,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:38:01,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:38:01,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:38:01,335 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:38:01,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:38:01,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:38:01,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:38:01,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:38:01,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:38:01,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:38:01,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:38:01,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:38:01,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:38:01,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:38:01,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:38:01,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:38:01,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:38:01,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:38:01,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:38:01,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:38:01,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:38:01,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:38:01,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:38:01,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:38:01,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:38:01,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:38:01,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:38:01,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:38:01,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:38:01,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:38:01,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:38:01,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:38:01,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:38:01,887 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:38:01,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label45.c [2020-10-29 08:38:01,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a774fad96/b7010265ca8d4f55af7d26614df52b68/FLAG77efe421a [2020-10-29 08:38:03,079 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:38:03,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label45.c [2020-10-29 08:38:03,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a774fad96/b7010265ca8d4f55af7d26614df52b68/FLAG77efe421a [2020-10-29 08:38:03,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a774fad96/b7010265ca8d4f55af7d26614df52b68 [2020-10-29 08:38:03,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:38:03,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:38:03,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:38:03,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:38:03,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:38:03,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:38:03" (1/1) ... [2020-10-29 08:38:03,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:03, skipping insertion in model container [2020-10-29 08:38:03,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:38:03" (1/1) ... [2020-10-29 08:38:03,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:38:03,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:38:04,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:38:04,802 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:38:05,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:38:05,344 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:38:05,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05 WrapperNode [2020-10-29 08:38:05,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:38:05,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:38:05,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:38:05,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:38:05,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (1/1) ... [2020-10-29 08:38:05,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (1/1) ... [2020-10-29 08:38:05,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (1/1) ... [2020-10-29 08:38:05,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (1/1) ... [2020-10-29 08:38:05,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (1/1) ... [2020-10-29 08:38:05,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (1/1) ... [2020-10-29 08:38:05,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (1/1) ... [2020-10-29 08:38:05,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:38:05,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:38:05,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:38:05,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:38:05,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (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 08:38:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:38:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:38:05,759 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:38:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:38:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:38:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:38:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:38:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:38:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:38:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:38:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:38:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:38:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:38:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:38:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:38:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:38:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:38:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:38:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:38:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:38:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:38:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:38:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:38:09,930 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:38:09,930 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:38:09,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:38:09 BoogieIcfgContainer [2020-10-29 08:38:09,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:38:09,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:38:09,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:38:09,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:38:09,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:38:03" (1/3) ... [2020-10-29 08:38:09,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3db77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:38:09, skipping insertion in model container [2020-10-29 08:38:09,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:38:05" (2/3) ... [2020-10-29 08:38:09,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3db77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:38:09, skipping insertion in model container [2020-10-29 08:38:09,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:38:09" (3/3) ... [2020-10-29 08:38:09,944 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label45.c [2020-10-29 08:38:09,958 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:38:09,964 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:38:09,979 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:38:10,015 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:38:10,016 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:38:10,016 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:38:10,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:38:10,016 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:38:10,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:38:10,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:38:10,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:38:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:38:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 08:38:10,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:38:10,062 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 08:38:10,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:38:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:38:10,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1105732584, now seen corresponding path program 1 times [2020-10-29 08:38:10,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:38:10,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283320030] [2020-10-29 08:38:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:38:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:10,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:10,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:10,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 08:38:10,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:10,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-29 08:38:10,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:10,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:38:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:38:10,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 08:38:10,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:38:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:38:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:10,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:11,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:11,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:38:11,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:11,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 08:38:11,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:11,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:11,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:38:11,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:11,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:38:11,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:38:11,037 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 08:38:11,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283320030] [2020-10-29 08:38:11,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:38:11,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:38:11,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221948473] [2020-10-29 08:38:11,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:38:11,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:38:11,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:38:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:38:11,074 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-29 08:38:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:38:20,483 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-29 08:38:20,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:38:20,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-29 08:38:20,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:38:20,532 INFO L225 Difference]: With dead ends: 2275 [2020-10-29 08:38:20,534 INFO L226 Difference]: Without dead ends: 1433 [2020-10-29 08:38:20,554 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 08:38:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-29 08:38:20,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-29 08:38:20,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-29 08:38:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-29 08:38:20,756 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 36 [2020-10-29 08:38:20,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:38:20,757 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-29 08:38:20,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:38:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-29 08:38:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 08:38:20,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:38:20,764 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] [2020-10-29 08:38:20,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:38:20,765 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:38:20,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:38:20,766 INFO L82 PathProgramCache]: Analyzing trace with hash -429637312, now seen corresponding path program 1 times [2020-10-29 08:38:20,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:38:20,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118036930] [2020-10-29 08:38:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:38:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:20,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:21,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:21,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:21,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 08:38:21,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:38:21,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1048 [2020-10-29 08:38:21,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:21,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:38:21,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:38:21,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:38:21,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:38:22,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:38:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:38:22,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:38:22,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:22,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:38:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:38:22,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:22,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:38:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:22,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:22,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:22,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 08:38:22,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:38:22,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:22,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:38:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:38:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 08:38:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:22,363 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 08:38:22,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118036930] [2020-10-29 08:38:22,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:38:22,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:38:22,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118380527] [2020-10-29 08:38:22,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:38:22,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:38:22,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:38:22,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:38:22,372 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-29 08:38:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:38:41,119 INFO L93 Difference]: Finished difference Result 4334 states and 6851 transitions. [2020-10-29 08:38:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:38:41,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-29 08:38:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:38:41,143 INFO L225 Difference]: With dead ends: 4334 [2020-10-29 08:38:41,143 INFO L226 Difference]: Without dead ends: 2914 [2020-10-29 08:38:41,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:38:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2020-10-29 08:38:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 2867. [2020-10-29 08:38:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2867 states. [2020-10-29 08:38:41,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3955 transitions. [2020-10-29 08:38:41,250 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3955 transitions. Word has length 106 [2020-10-29 08:38:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:38:41,251 INFO L481 AbstractCegarLoop]: Abstraction has 2867 states and 3955 transitions. [2020-10-29 08:38:41,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:38:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3955 transitions. [2020-10-29 08:38:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 08:38:41,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:38:41,255 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] [2020-10-29 08:38:41,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:38:41,256 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:38:41,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:38:41,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1233722178, now seen corresponding path program 1 times [2020-10-29 08:38:41,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:38:41,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343608237] [2020-10-29 08:38:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:38:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:41,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:42,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:42,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 08:38:42,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:38:42,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1622 [2020-10-29 08:38:42,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:42,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:38:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:38:42,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 08:38:42,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:38:43,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:38:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:43,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:43,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:38:43,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:38:43,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:43,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:38:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:43,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:38:43,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:38:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:43,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:43,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 08:38:43,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:43,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 08:38:43,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:43,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:38:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:38:43,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 08:38:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:43,565 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 08:38:43,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343608237] [2020-10-29 08:38:43,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:38:43,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:38:43,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343769950] [2020-10-29 08:38:43,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:38:43,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:38:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:38:43,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:38:43,568 INFO L87 Difference]: Start difference. First operand 2867 states and 3955 transitions. Second operand 7 states. [2020-10-29 08:38:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:38:57,408 INFO L93 Difference]: Finished difference Result 7260 states and 10341 transitions. [2020-10-29 08:38:57,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:38:57,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-29 08:38:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:38:57,439 INFO L225 Difference]: With dead ends: 7260 [2020-10-29 08:38:57,439 INFO L226 Difference]: Without dead ends: 4399 [2020-10-29 08:38:57,448 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 08:38:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4399 states. [2020-10-29 08:38:57,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4399 to 4314. [2020-10-29 08:38:57,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4314 states. [2020-10-29 08:38:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 5602 transitions. [2020-10-29 08:38:57,610 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 5602 transitions. Word has length 133 [2020-10-29 08:38:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:38:57,611 INFO L481 AbstractCegarLoop]: Abstraction has 4314 states and 5602 transitions. [2020-10-29 08:38:57,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:38:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 5602 transitions. [2020-10-29 08:38:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-29 08:38:57,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:38:57,616 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, 1] [2020-10-29 08:38:57,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:38:57,616 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:38:57,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:38:57,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1830799876, now seen corresponding path program 1 times [2020-10-29 08:38:57,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:38:57,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702865123] [2020-10-29 08:38:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:38:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:57,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:58,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:58,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 08:38:58,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:38:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1098 [2020-10-29 08:38:58,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:58,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:38:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:38:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:38:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:58,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:38:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:58,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:38:58,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:38:58,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:58,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:38:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:38:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:38:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:58,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:38:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:38:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:38:59,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:38:59,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 08:38:59,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:38:59,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 08:38:59,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:38:59,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:38:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:38:59,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:38:59,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 08:38:59,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:38:59,263 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 08:38:59,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702865123] [2020-10-29 08:38:59,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:38:59,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:38:59,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701691517] [2020-10-29 08:38:59,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:38:59,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:38:59,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:38:59,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:38:59,266 INFO L87 Difference]: Start difference. First operand 4314 states and 5602 transitions. Second operand 7 states. [2020-10-29 08:39:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:39:12,171 INFO L93 Difference]: Finished difference Result 11751 states and 15657 transitions. [2020-10-29 08:39:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:39:12,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2020-10-29 08:39:12,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:39:12,208 INFO L225 Difference]: With dead ends: 11751 [2020-10-29 08:39:12,208 INFO L226 Difference]: Without dead ends: 7443 [2020-10-29 08:39:12,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:39:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7443 states. [2020-10-29 08:39:12,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7443 to 5857. [2020-10-29 08:39:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5857 states. [2020-10-29 08:39:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 7204 transitions. [2020-10-29 08:39:12,398 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 7204 transitions. Word has length 168 [2020-10-29 08:39:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:39:12,398 INFO L481 AbstractCegarLoop]: Abstraction has 5857 states and 7204 transitions. [2020-10-29 08:39:12,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:39:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 7204 transitions. [2020-10-29 08:39:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-10-29 08:39:12,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:39:12,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:39:12,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:39:12,411 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:39:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:39:12,412 INFO L82 PathProgramCache]: Analyzing trace with hash 183089416, now seen corresponding path program 1 times [2020-10-29 08:39:12,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:39:12,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411428988] [2020-10-29 08:39:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:39:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:13,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:17,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:17,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 449 [2020-10-29 08:39:17,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:39:17,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 08:39:17,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:17,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:39:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:39:17,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-29 08:39:17,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:17,750 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 08:39:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:39:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:17,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:17,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:17,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:39:17,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:17,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 08:39:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:17,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:39:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:39:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:39:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:18,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:18,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:39:18,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:18,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-29 08:39:18,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:18,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:39:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:39:18,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:39:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:39:18,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:39:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:18,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:18,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:39:18,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:18,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-29 08:39:18,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:18,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:39:18,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:39:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:39:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 08:39:19,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-29 08:39:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:19,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:19,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:39:19,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:19,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:39:19,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:19,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:39:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 08:39:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:39:19,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:39:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 56 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:39:19,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411428988] [2020-10-29 08:39:19,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:39:19,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:39:19,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221037931] [2020-10-29 08:39:19,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:39:19,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:39:19,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:39:19,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:39:19,636 INFO L87 Difference]: Start difference. First operand 5857 states and 7204 transitions. Second operand 8 states. [2020-10-29 08:39:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:39:37,037 INFO L93 Difference]: Finished difference Result 17349 states and 22348 transitions. [2020-10-29 08:39:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 08:39:37,038 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 433 [2020-10-29 08:39:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:39:37,108 INFO L225 Difference]: With dead ends: 17349 [2020-10-29 08:39:37,109 INFO L226 Difference]: Without dead ends: 11498 [2020-10-29 08:39:37,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:39:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11498 states. [2020-10-29 08:39:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11498 to 11168. [2020-10-29 08:39:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11168 states. [2020-10-29 08:39:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11168 states to 11168 states and 13364 transitions. [2020-10-29 08:39:37,502 INFO L78 Accepts]: Start accepts. Automaton has 11168 states and 13364 transitions. Word has length 433 [2020-10-29 08:39:37,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:39:37,503 INFO L481 AbstractCegarLoop]: Abstraction has 11168 states and 13364 transitions. [2020-10-29 08:39:37,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:39:37,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11168 states and 13364 transitions. [2020-10-29 08:39:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-29 08:39:37,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:39:37,572 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:39:37,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:39:37,573 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:39:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:39:37,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1665927864, now seen corresponding path program 1 times [2020-10-29 08:39:37,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:39:37,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74628299] [2020-10-29 08:39:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:39:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:39,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:42,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:42,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 637 [2020-10-29 08:39:42,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:39:42,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-29 08:39:42,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:42,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:39:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-29 08:39:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-29 08:39:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:42,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:39:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:43,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:39:43,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:43,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:39:43,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:43,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:39:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:43,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:39:43,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:43,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:39:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:43,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:43,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-29 08:39:43,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:43,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 08:39:43,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:43,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:43,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:39:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:39:43,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 08:39:43,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:43,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-29 08:39:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:44,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:44,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:39:44,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-29 08:39:44,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:44,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:39:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:39:44,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 08:39:44,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:39:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:44,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:44,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:44,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:39:44,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:44,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 08:39:44,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:44,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:44,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:39:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:39:44,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 08:39:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:44,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2020-10-29 08:39:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:39:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:39:44,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:39:44,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:39:44,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:39:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:39:44,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:39:44,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:39:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:39:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 08:39:44,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:39:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:39:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 271 proven. 89 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 08:39:45,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74628299] [2020-10-29 08:39:45,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:39:45,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:39:45,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152731134] [2020-10-29 08:39:45,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:39:45,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:39:45,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:39:45,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:39:45,200 INFO L87 Difference]: Start difference. First operand 11168 states and 13364 transitions. Second operand 8 states. [2020-10-29 08:40:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:40:07,939 INFO L93 Difference]: Finished difference Result 31284 states and 38312 transitions. [2020-10-29 08:40:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:40:07,944 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 619 [2020-10-29 08:40:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:40:07,997 INFO L225 Difference]: With dead ends: 31284 [2020-10-29 08:40:07,997 INFO L226 Difference]: Without dead ends: 16885 [2020-10-29 08:40:08,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:40:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16885 states. [2020-10-29 08:40:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16885 to 16073. [2020-10-29 08:40:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16073 states. [2020-10-29 08:40:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16073 states to 16073 states and 17413 transitions. [2020-10-29 08:40:08,432 INFO L78 Accepts]: Start accepts. Automaton has 16073 states and 17413 transitions. Word has length 619 [2020-10-29 08:40:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:40:08,433 INFO L481 AbstractCegarLoop]: Abstraction has 16073 states and 17413 transitions. [2020-10-29 08:40:08,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:40:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 16073 states and 17413 transitions. [2020-10-29 08:40:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-29 08:40:08,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:40:08,474 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:08,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:40:08,475 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:40:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:40:08,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1221619062, now seen corresponding path program 1 times [2020-10-29 08:40:08,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:40:08,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804602517] [2020-10-29 08:40:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:40:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:08,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:09,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:13,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:13,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 982 [2020-10-29 08:40:13,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:40:13,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-29 08:40:13,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:13,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:13,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:40:13,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 08:40:13,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:40:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:40:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:14,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:14,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:40:14,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:14,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:40:14,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:14,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:14,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:14,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:40:14,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:40:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:14,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:40:14,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 08:40:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:14,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:14,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:40:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:14,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:14,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:14,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:40:14,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 08:40:14,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:14,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:14,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:40:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:14,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:14,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:40:14,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:14,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:40:14,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:14,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:14,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:14,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:14,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:40:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:40:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:15,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:15,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:40:15,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:15,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 08:40:15,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:15,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:40:15,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:15,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:40:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:15,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:15,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:40:15,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:15,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 08:40:15,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:15,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:40:15,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:40:15,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:40:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:15,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:15,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:15,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:40:15,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-29 08:40:15,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:15,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:40:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:40:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 266 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:40:16,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804602517] [2020-10-29 08:40:16,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:40:16,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:40:16,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465768908] [2020-10-29 08:40:16,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:40:16,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:40:16,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:40:16,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:40:16,465 INFO L87 Difference]: Start difference. First operand 16073 states and 17413 transitions. Second operand 7 states. [2020-10-29 08:40:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:40:26,356 INFO L93 Difference]: Finished difference Result 38107 states and 42256 transitions. [2020-10-29 08:40:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:40:26,357 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 960 [2020-10-29 08:40:26,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:40:26,432 INFO L225 Difference]: With dead ends: 38107 [2020-10-29 08:40:26,433 INFO L226 Difference]: Without dead ends: 23452 [2020-10-29 08:40:26,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 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 08:40:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23452 states. [2020-10-29 08:40:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23452 to 23319. [2020-10-29 08:40:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23319 states. [2020-10-29 08:40:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23319 states to 23319 states and 25540 transitions. [2020-10-29 08:40:27,028 INFO L78 Accepts]: Start accepts. Automaton has 23319 states and 25540 transitions. Word has length 960 [2020-10-29 08:40:27,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:40:27,030 INFO L481 AbstractCegarLoop]: Abstraction has 23319 states and 25540 transitions. [2020-10-29 08:40:27,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:40:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 23319 states and 25540 transitions. [2020-10-29 08:40:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2020-10-29 08:40:27,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:40:27,071 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, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:27,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:40:27,072 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:40:27,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:40:27,072 INFO L82 PathProgramCache]: Analyzing trace with hash 369949858, now seen corresponding path program 1 times [2020-10-29 08:40:27,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:40:27,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559945360] [2020-10-29 08:40:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:40:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:32,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:32,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1034 [2020-10-29 08:40:32,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:40:32,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-29 08:40:32,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:32,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-29 08:40:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 08:40:32,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:40:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:32,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:32,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:40:32,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:32,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:40:32,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:32,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:32,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:32,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:32,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:40:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:32,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:32,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:40:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:32,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 08:40:32,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:32,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:32,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:40:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:32,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:33,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:40:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:33,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:33,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:40:33,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:40:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:33,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:33,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:40:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:33,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:33,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:33,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:40:33,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:33,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 08:40:33,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:33,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:33,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 08:40:33,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:33,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:40:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:33,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:33,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:33,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:40:33,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 08:40:33,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:33,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:33,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 08:40:33,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:33,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:40:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:33,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:33,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 08:40:33,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:33,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 08:40:33,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:33,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:40:33,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 08:40:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 370 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-29 08:40:34,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559945360] [2020-10-29 08:40:34,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:40:34,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:40:34,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667934455] [2020-10-29 08:40:34,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:40:34,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:40:34,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:40:34,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:40:34,726 INFO L87 Difference]: Start difference. First operand 23319 states and 25540 transitions. Second operand 7 states. [2020-10-29 08:40:46,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:40:46,640 INFO L93 Difference]: Finished difference Result 56143 states and 62567 transitions. [2020-10-29 08:40:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:40:46,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1012 [2020-10-29 08:40:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:40:46,870 INFO L225 Difference]: With dead ends: 56143 [2020-10-29 08:40:46,870 INFO L226 Difference]: Without dead ends: 34242 [2020-10-29 08:40:46,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:40:46,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34242 states. [2020-10-29 08:40:47,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34242 to 31281. [2020-10-29 08:40:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31281 states. [2020-10-29 08:40:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31281 states to 31281 states and 34274 transitions. [2020-10-29 08:40:47,492 INFO L78 Accepts]: Start accepts. Automaton has 31281 states and 34274 transitions. Word has length 1012 [2020-10-29 08:40:47,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:40:47,493 INFO L481 AbstractCegarLoop]: Abstraction has 31281 states and 34274 transitions. [2020-10-29 08:40:47,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:40:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 31281 states and 34274 transitions. [2020-10-29 08:40:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2020-10-29 08:40:47,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:40:47,510 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:40:47,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:40:47,511 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:40:47,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:40:47,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1391275211, now seen corresponding path program 1 times [2020-10-29 08:40:47,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:40:47,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329491518] [2020-10-29 08:40:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:40:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:47,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:50,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:51,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:52,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:52,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1122 [2020-10-29 08:40:52,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:40:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-29 08:40:52,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:52,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-29 08:40:52,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-29 08:40:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:53,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:40:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:53,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:53,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:53,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:40:53,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:53,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:40:53,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:53,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:40:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:53,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:40:53,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:53,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 08:40:53,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:53,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:53,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:40:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:53,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:53,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:40:53,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:53,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 08:40:53,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:53,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:53,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:53,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:53,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:40:53,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:53,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:53,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:53,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:40:53,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:53,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:40:53,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:53,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:53,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:53,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:53,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:53,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:40:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:54,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:54,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-29 08:40:54,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-29 08:40:54,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:54,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:54,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:54,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-29 08:40:54,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:40:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:54,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:54,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 08:40:54,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:54,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 08:40:54,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:54,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:54,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:40:54,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:40:54,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 08:40:54,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:40:54,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-29 08:40:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:54,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:54,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 08:40:54,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:54,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 08:40:54,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:54,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:40:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:40:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 08:40:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:54,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 971 [2020-10-29 08:40:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:40:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:40:54,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:40:54,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 08:40:54,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:40:54,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 08:40:54,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:40:54,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:40:54,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:40:54,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:40:54,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:40:54,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:40:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 366 proven. 98 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2020-10-29 08:40:55,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329491518] [2020-10-29 08:40:55,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:40:55,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:40:55,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651400666] [2020-10-29 08:40:55,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:40:55,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:40:55,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:40:55,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:40:55,623 INFO L87 Difference]: Start difference. First operand 31281 states and 34274 transitions. Second operand 7 states. [2020-10-29 08:41:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:12,204 INFO L93 Difference]: Finished difference Result 70563 states and 77660 transitions. [2020-10-29 08:41:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:41:12,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1098 [2020-10-29 08:41:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:12,337 INFO L225 Difference]: With dead ends: 70563 [2020-10-29 08:41:12,337 INFO L226 Difference]: Without dead ends: 40700 [2020-10-29 08:41:12,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 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 08:41:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40700 states. [2020-10-29 08:41:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40700 to 39114. [2020-10-29 08:41:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39114 states. [2020-10-29 08:41:13,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39114 states to 39114 states and 42541 transitions. [2020-10-29 08:41:13,230 INFO L78 Accepts]: Start accepts. Automaton has 39114 states and 42541 transitions. Word has length 1098 [2020-10-29 08:41:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:13,231 INFO L481 AbstractCegarLoop]: Abstraction has 39114 states and 42541 transitions. [2020-10-29 08:41:13,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:41:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 39114 states and 42541 transitions. [2020-10-29 08:41:13,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1104 [2020-10-29 08:41:13,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:13,258 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:41:13,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:41:13,258 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:13,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:13,259 INFO L82 PathProgramCache]: Analyzing trace with hash 539489392, now seen corresponding path program 1 times [2020-10-29 08:41:13,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:13,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856486646] [2020-10-29 08:41:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:18,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:18,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-29 08:41:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:41:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4261 [2020-10-29 08:41:18,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:18,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:41:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-29 08:41:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 08:41:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:18,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:41:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:18,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:18,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:41:18,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:41:18,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:18,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:18,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:18,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:41:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:18,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:18,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:18,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-29 08:41:18,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:18,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 08:41:18,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:18,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:41:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:18,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:18,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:41:18,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 08:41:18,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:18,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:18,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:18,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-29 08:41:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:18,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:18,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:18,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 08:41:18,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:18,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:41:18,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:18,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:18,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:19,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-29 08:41:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:19,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:19,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:19,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 08:41:19,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:19,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 08:41:19,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:19,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:19,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:19,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:19,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 08:41:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:19,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:19,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:19,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 08:41:19,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:19,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:41:19,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:19,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:19,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:41:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:41:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:19,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-29 08:41:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:19,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:19,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 08:41:19,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-29 08:41:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:41:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:41:19,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:41:19,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 08:41:19,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:41:19,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 08:41:19,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:41:19,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:41:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:41:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:41:19,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 08:41:19,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:41:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-29 08:41:20,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856486646] [2020-10-29 08:41:20,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:41:20,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:41:20,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287381256] [2020-10-29 08:41:20,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:41:20,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:41:20,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:41:20,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:41:20,182 INFO L87 Difference]: Start difference. First operand 39114 states and 42541 transitions. Second operand 7 states. [2020-10-29 08:41:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:41:33,394 INFO L93 Difference]: Finished difference Result 90378 states and 99873 transitions. [2020-10-29 08:41:33,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:41:33,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1103 [2020-10-29 08:41:33,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:41:33,553 INFO L225 Difference]: With dead ends: 90378 [2020-10-29 08:41:33,554 INFO L226 Difference]: Without dead ends: 52682 [2020-10-29 08:41:33,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 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 08:41:33,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52682 states. [2020-10-29 08:41:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52682 to 52611. [2020-10-29 08:41:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52611 states. [2020-10-29 08:41:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52611 states to 52611 states and 57377 transitions. [2020-10-29 08:41:34,626 INFO L78 Accepts]: Start accepts. Automaton has 52611 states and 57377 transitions. Word has length 1103 [2020-10-29 08:41:34,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:41:34,627 INFO L481 AbstractCegarLoop]: Abstraction has 52611 states and 57377 transitions. [2020-10-29 08:41:34,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:41:34,628 INFO L276 IsEmpty]: Start isEmpty. Operand 52611 states and 57377 transitions. [2020-10-29 08:41:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2020-10-29 08:41:34,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:41:34,646 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:41:34,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:41:34,646 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:41:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:41:34,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1692221430, now seen corresponding path program 1 times [2020-10-29 08:41:34,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:41:34,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952250199] [2020-10-29 08:41:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:41:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat