/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem12_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:20:38,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:20:38,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:20:38,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:20:38,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:20:38,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:20:38,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:20:38,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:20:38,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:20:38,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:20:38,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:20:38,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:20:38,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:20:38,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:20:38,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:20:38,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:20:38,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:20:38,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:20:38,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:20:38,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:20:38,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:20:38,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:20:38,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:20:38,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:20:38,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:20:38,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:20:38,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:20:38,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:20:38,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:20:38,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:20:38,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:20:38,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:20:38,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:20:38,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:20:38,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:20:38,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:20:38,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:20:38,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:20:38,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:20:38,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:20:38,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:20:38,284 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 [2020-10-28 12:20:38,319 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:20:38,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:20:38,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:20:38,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:20:38,322 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:20:38,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:20:38,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:20:38,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:20:38,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:20:38,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:20:38,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:20:38,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:20:38,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:20:38,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:20:38,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:20:38,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:20:38,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:20:38,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:20:38,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:20:38,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:20:38,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:20:38,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:20:38,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:20:38,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:20:38,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:20:38,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:20:38,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:20:38,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:20:38,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:20:38,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:20:38,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:20:38,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:20:38,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:20:38,868 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:20:38,869 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:20:38,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-28 12:20:38,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/570133cb3/a50cc15df14c4516b377a3748e49f1a6/FLAGa37e734d0 [2020-10-28 12:20:40,060 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:20:40,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-28 12:20:40,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/570133cb3/a50cc15df14c4516b377a3748e49f1a6/FLAGa37e734d0 [2020-10-28 12:20:40,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/570133cb3/a50cc15df14c4516b377a3748e49f1a6 [2020-10-28 12:20:40,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:20:40,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:20:40,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:20:40,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:20:40,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:20:40,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:20:40" (1/1) ... [2020-10-28 12:20:40,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@204cab22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:40, skipping insertion in model container [2020-10-28 12:20:40,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:20:40" (1/1) ... [2020-10-28 12:20:40,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:20:40,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:20:42,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:20:42,185 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:20:42,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:20:42,996 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:20:42,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42 WrapperNode [2020-10-28 12:20:42,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:20:43,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:20:43,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:20:43,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:20:43,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (1/1) ... [2020-10-28 12:20:43,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (1/1) ... [2020-10-28 12:20:43,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (1/1) ... [2020-10-28 12:20:43,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (1/1) ... [2020-10-28 12:20:43,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (1/1) ... [2020-10-28 12:20:43,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (1/1) ... [2020-10-28 12:20:43,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (1/1) ... [2020-10-28 12:20:43,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:20:43,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:20:43,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:20:43,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:20:43,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (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 [2020-10-28 12:20:43,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:20:43,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:20:43,468 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:20:43,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:20:43,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:20:43,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:20:43,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:20:43,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:20:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:20:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:20:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:20:43,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:20:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:20:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:20:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:20:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:20:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:20:43,471 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:20:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:20:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:20:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:20:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:20:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:20:43,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:20:43,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:20:48,699 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:20:48,700 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:20:48,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:20:48 BoogieIcfgContainer [2020-10-28 12:20:48,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:20:48,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:20:48,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:20:48,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:20:48,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:20:40" (1/3) ... [2020-10-28 12:20:48,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ec4223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:20:48, skipping insertion in model container [2020-10-28 12:20:48,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:42" (2/3) ... [2020-10-28 12:20:48,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ec4223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:20:48, skipping insertion in model container [2020-10-28 12:20:48,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:20:48" (3/3) ... [2020-10-28 12:20:48,724 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label31.c [2020-10-28 12:20:48,739 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:20:48,747 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:20:48,765 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:20:48,817 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:20:48,817 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:20:48,818 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:20:48,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:20:48,818 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:20:48,818 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:20:48,818 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:20:48,818 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:20:48,874 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:20:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 12:20:48,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:48,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:20:48,892 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:48,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:48,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1227471988, now seen corresponding path program 1 times [2020-10-28 12:20:48,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:48,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046200072] [2020-10-28 12:20:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:49,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:49,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 12:20:49,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-28 12:20:49,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:49,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:20:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:20:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:20:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:49,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:49,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:49,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:20:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:50,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:20:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:20:50,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046200072] [2020-10-28 12:20:50,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:20:50,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:20:50,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698254035] [2020-10-28 12:20:50,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:20:50,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:50,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:20:50,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:20:50,060 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:21:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:00,129 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:21:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:21:00,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-28 12:21:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:00,168 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:21:00,169 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:21:00,180 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 [2020-10-28 12:21:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:21:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:21:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:21:00,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-28 12:21:00,394 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 70 [2020-10-28 12:21:00,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:00,396 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-28 12:21:00,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:21:00,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-28 12:21:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 12:21:00,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:00,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:00,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:21:00,413 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:00,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash -116250914, now seen corresponding path program 1 times [2020-10-28 12:21:00,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:00,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690766349] [2020-10-28 12:21:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:00,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:01,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:01,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:01,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 12:21:01,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:21:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-10-28 12:21:01,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:01,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:01,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:21:01,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:21:02,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:02,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:02,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:02,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:21:02,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:02,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:21:02,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:02,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:02,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:21:02,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:02,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:21:02,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:02,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:02,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:21:02,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:02,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690766349] [2020-10-28 12:21:02,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:02,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:21:02,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719261717] [2020-10-28 12:21:02,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:02,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:02,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:02,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:02,499 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 7 states. [2020-10-28 12:21:15,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:15,283 INFO L93 Difference]: Finished difference Result 4763 states and 8368 transitions. [2020-10-28 12:21:15,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:21:15,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-28 12:21:15,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:15,306 INFO L225 Difference]: With dead ends: 4763 [2020-10-28 12:21:15,307 INFO L226 Difference]: Without dead ends: 3215 [2020-10-28 12:21:15,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:21:15,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2020-10-28 12:21:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3139. [2020-10-28 12:21:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3139 states. [2020-10-28 12:21:15,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4936 transitions. [2020-10-28 12:21:15,511 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4936 transitions. Word has length 139 [2020-10-28 12:21:15,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:15,512 INFO L481 AbstractCegarLoop]: Abstraction has 3139 states and 4936 transitions. [2020-10-28 12:21:15,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:15,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4936 transitions. [2020-10-28 12:21:15,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 12:21:15,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:15,515 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:15,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:21:15,515 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:15,517 INFO L82 PathProgramCache]: Analyzing trace with hash 585835282, now seen corresponding path program 1 times [2020-10-28 12:21:15,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:15,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221150043] [2020-10-28 12:21:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:15,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:15,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:16,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:16,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 12:21:16,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:21:16,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-28 12:21:16,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:16,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:21:16,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:21:16,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:16,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:16,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:17,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:17,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:17,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:17,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:21:17,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:17,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:17,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:17,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:17,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:17,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:17,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:17,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:17,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:21:17,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:17,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:21:17,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:17,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:17,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:17,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:17,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:21:17,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:17,235 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:17,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221150043] [2020-10-28 12:21:17,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:17,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:21:17,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123641933] [2020-10-28 12:21:17,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:21:17,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:17,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:21:17,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:21:17,241 INFO L87 Difference]: Start difference. First operand 3139 states and 4936 transitions. Second operand 6 states. [2020-10-28 12:21:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:34,953 INFO L93 Difference]: Finished difference Result 12591 states and 20414 transitions. [2020-10-28 12:21:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:21:34,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-10-28 12:21:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:35,014 INFO L225 Difference]: With dead ends: 12591 [2020-10-28 12:21:35,014 INFO L226 Difference]: Without dead ends: 9458 [2020-10-28 12:21:35,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:21:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9458 states. [2020-10-28 12:21:35,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9458 to 9428. [2020-10-28 12:21:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9428 states. [2020-10-28 12:21:35,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9428 states to 9428 states and 13426 transitions. [2020-10-28 12:21:35,407 INFO L78 Accepts]: Start accepts. Automaton has 9428 states and 13426 transitions. Word has length 145 [2020-10-28 12:21:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:35,409 INFO L481 AbstractCegarLoop]: Abstraction has 9428 states and 13426 transitions. [2020-10-28 12:21:35,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:21:35,409 INFO L276 IsEmpty]: Start isEmpty. Operand 9428 states and 13426 transitions. [2020-10-28 12:21:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-28 12:21:35,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:35,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:35,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:21:35,419 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:35,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1510242178, now seen corresponding path program 1 times [2020-10-28 12:21:35,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:35,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773844697] [2020-10-28 12:21:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:36,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:37,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:37,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 12:21:37,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:21:37,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1544 [2020-10-28 12:21:37,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:37,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:37,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:37,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:37,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 12:21:37,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:37,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:37,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:37,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:37,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:37,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:21:37,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:37,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:37,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:37,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:37,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:21:37,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:37,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 12:21:37,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:37,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:37,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 12:21:37,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:21:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:37,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773844697] [2020-10-28 12:21:37,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:37,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:21:37,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231645244] [2020-10-28 12:21:37,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:37,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:37,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:37,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:37,546 INFO L87 Difference]: Start difference. First operand 9428 states and 13426 transitions. Second operand 7 states. [2020-10-28 12:21:53,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:53,445 INFO L93 Difference]: Finished difference Result 28841 states and 43229 transitions. [2020-10-28 12:21:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:21:53,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-10-28 12:21:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:53,549 INFO L225 Difference]: With dead ends: 28841 [2020-10-28 12:21:53,550 INFO L226 Difference]: Without dead ends: 19419 [2020-10-28 12:21:53,583 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 [2020-10-28 12:21:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19419 states. [2020-10-28 12:21:54,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19419 to 19233. [2020-10-28 12:21:54,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19233 states. [2020-10-28 12:21:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19233 states to 19233 states and 26076 transitions. [2020-10-28 12:21:54,188 INFO L78 Accepts]: Start accepts. Automaton has 19233 states and 26076 transitions. Word has length 187 [2020-10-28 12:21:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:54,189 INFO L481 AbstractCegarLoop]: Abstraction has 19233 states and 26076 transitions. [2020-10-28 12:21:54,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 19233 states and 26076 transitions. [2020-10-28 12:21:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 12:21:54,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:54,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:54,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:21:54,196 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:54,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:54,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1300588858, now seen corresponding path program 1 times [2020-10-28 12:21:54,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:54,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347365085] [2020-10-28 12:21:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:54,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:55,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:55,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 12:21:55,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:55,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-28 12:21:55,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:55,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:21:55,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:21:55,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:55,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:55,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:55,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:55,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:55,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:21:55,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:55,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:55,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:55,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:55,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:55,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:21:55,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:55,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 12:21:55,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:55,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:55,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:21:55,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:56,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347365085] [2020-10-28 12:21:56,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:56,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:21:56,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353353671] [2020-10-28 12:21:56,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:21:56,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:56,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:21:56,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:21:56,110 INFO L87 Difference]: Start difference. First operand 19233 states and 26076 transitions. Second operand 5 states. [2020-10-28 12:22:09,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:09,562 INFO L93 Difference]: Finished difference Result 54914 states and 77102 transitions. [2020-10-28 12:22:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:22:09,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-28 12:22:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:09,718 INFO L225 Difference]: With dead ends: 54914 [2020-10-28 12:22:09,719 INFO L226 Difference]: Without dead ends: 35687 [2020-10-28 12:22:09,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:22:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35687 states. [2020-10-28 12:22:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35687 to 31010. [2020-10-28 12:22:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31010 states. [2020-10-28 12:22:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31010 states to 31010 states and 44093 transitions. [2020-10-28 12:22:10,970 INFO L78 Accepts]: Start accepts. Automaton has 31010 states and 44093 transitions. Word has length 215 [2020-10-28 12:22:10,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:10,971 INFO L481 AbstractCegarLoop]: Abstraction has 31010 states and 44093 transitions. [2020-10-28 12:22:10,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:22:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 31010 states and 44093 transitions. [2020-10-28 12:22:10,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-28 12:22:10,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:10,983 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:22:10,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:22:10,983 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:10,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:10,984 INFO L82 PathProgramCache]: Analyzing trace with hash 258968086, now seen corresponding path program 1 times [2020-10-28 12:22:10,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:10,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717893966] [2020-10-28 12:22:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:11,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:11,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:16,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:16,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-28 12:22:16,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:22:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 12:22:16,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:16,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:22:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:22:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:16,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:16,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:16,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:16,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:22:16,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:16,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:22:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:16,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:16,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:22:16,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:16,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-28 12:22:16,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:16,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:16,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:16,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:16,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:22:16,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 12:22:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:16,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:16,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:16,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:22:16,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:16,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:22:16,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:16,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 12:22:16,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 124 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:22:16,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717893966] [2020-10-28 12:22:16,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:16,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:22:16,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99916944] [2020-10-28 12:22:16,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:16,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:16,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:16,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:16,949 INFO L87 Difference]: Start difference. First operand 31010 states and 44093 transitions. Second operand 7 states. [2020-10-28 12:22:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:34,031 INFO L93 Difference]: Finished difference Result 80538 states and 116707 transitions. [2020-10-28 12:22:34,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:22:34,040 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-28 12:22:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:34,221 INFO L225 Difference]: With dead ends: 80538 [2020-10-28 12:22:34,221 INFO L226 Difference]: Without dead ends: 49534 [2020-10-28 12:22:34,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:22:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49534 states. [2020-10-28 12:22:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49534 to 43222. [2020-10-28 12:22:35,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43222 states. [2020-10-28 12:22:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43222 states to 43222 states and 55187 transitions. [2020-10-28 12:22:35,633 INFO L78 Accepts]: Start accepts. Automaton has 43222 states and 55187 transitions. Word has length 271 [2020-10-28 12:22:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:35,634 INFO L481 AbstractCegarLoop]: Abstraction has 43222 states and 55187 transitions. [2020-10-28 12:22:35,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 43222 states and 55187 transitions. [2020-10-28 12:22:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-28 12:22:35,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:35,658 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, 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, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:35,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:22:35,659 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:35,661 INFO L82 PathProgramCache]: Analyzing trace with hash 2091428358, now seen corresponding path program 1 times [2020-10-28 12:22:35,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:35,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472034361] [2020-10-28 12:22:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:39,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:40,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:40,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 459 [2020-10-28 12:22:40,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:22:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 12:22:40,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:40,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-28 12:22:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-28 12:22:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:41,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:41,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:41,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:41,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:22:41,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:41,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:41,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:41,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:41,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:41,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:41,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:41,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:41,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:22:41,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 12:22:41,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:41,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:41,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:22:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:41,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:41,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:41,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:22:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:22:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:41,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 12:22:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-28 12:22:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:41,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:41,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:22:41,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:22:41,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:22:41,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:41,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:41,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:41,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 12:22:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:41,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-28 12:22:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:41,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:41,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:22:41,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:41,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 12:22:41,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:41,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:41,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:41,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:22:41,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 473 proven. 8 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-28 12:22:42,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472034361] [2020-10-28 12:22:42,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:42,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:22:42,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895606439] [2020-10-28 12:22:42,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:22:42,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:42,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:22:42,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:22:42,388 INFO L87 Difference]: Start difference. First operand 43222 states and 55187 transitions. Second operand 8 states. [2020-10-28 12:23:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:01,428 INFO L93 Difference]: Finished difference Result 88546 states and 113399 transitions. [2020-10-28 12:23:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:23:01,431 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 441 [2020-10-28 12:23:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:01,589 INFO L225 Difference]: With dead ends: 88546 [2020-10-28 12:23:01,589 INFO L226 Difference]: Without dead ends: 45330 [2020-10-28 12:23:01,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:23:01,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45330 states. [2020-10-28 12:23:02,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45330 to 43602. [2020-10-28 12:23:02,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43602 states. [2020-10-28 12:23:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 52777 transitions. [2020-10-28 12:23:03,265 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 52777 transitions. Word has length 441 [2020-10-28 12:23:03,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:03,266 INFO L481 AbstractCegarLoop]: Abstraction has 43602 states and 52777 transitions. [2020-10-28 12:23:03,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:23:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 52777 transitions. [2020-10-28 12:23:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-28 12:23:03,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:03,288 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:23:03,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:23:03,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:03,290 INFO L82 PathProgramCache]: Analyzing trace with hash -925651404, now seen corresponding path program 1 times [2020-10-28 12:23:03,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:03,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222929587] [2020-10-28 12:23:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:03,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:05,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:08,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:08,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-28 12:23:08,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:23:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 12:23:08,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:08,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:23:08,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-10-28 12:23:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:08,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:08,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:08,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:23:08,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:08,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:08,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:08,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:08,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:09,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:09,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:23:09,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 12:23:09,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:09,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:23:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:09,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:23:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:09,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:09,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:09,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:09,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:23:09,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:09,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 12:23:09,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:09,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:23:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:09,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-10-28 12:23:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:09,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:09,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:09,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 12:23:09,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:09,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 12:23:09,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:09,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 12:23:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 398 proven. 4 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-28 12:23:09,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222929587] [2020-10-28 12:23:09,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:09,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:23:09,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453355589] [2020-10-28 12:23:09,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:23:09,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:09,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:23:09,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:23:09,948 INFO L87 Difference]: Start difference. First operand 43602 states and 52777 transitions. Second operand 8 states. [2020-10-28 12:23:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:49,289 INFO L93 Difference]: Finished difference Result 129183 states and 170420 transitions. [2020-10-28 12:23:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:23:49,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 440 [2020-10-28 12:23:49,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:49,678 INFO L225 Difference]: With dead ends: 129183 [2020-10-28 12:23:49,678 INFO L226 Difference]: Without dead ends: 85587 [2020-10-28 12:23:49,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:23:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85587 states. [2020-10-28 12:23:52,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85587 to 82028. [2020-10-28 12:23:52,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82028 states. [2020-10-28 12:23:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82028 states to 82028 states and 101633 transitions. [2020-10-28 12:23:52,929 INFO L78 Accepts]: Start accepts. Automaton has 82028 states and 101633 transitions. Word has length 440 [2020-10-28 12:23:52,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:52,934 INFO L481 AbstractCegarLoop]: Abstraction has 82028 states and 101633 transitions. [2020-10-28 12:23:52,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:23:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 82028 states and 101633 transitions. [2020-10-28 12:23:53,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-28 12:23:53,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:53,002 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:23:53,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:23:53,002 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:53,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:53,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1100811664, now seen corresponding path program 1 times [2020-10-28 12:23:53,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:53,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268468492] [2020-10-28 12:23:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:54,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:57,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:58,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:58,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-28 12:23:58,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:23:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 12:23:58,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:58,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:23:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-28 12:23:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 249 [2020-10-28 12:23:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:58,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:58,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:58,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:58,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:58,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:23:58,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:58,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:58,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:58,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:58,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:23:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 12:23:58,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:58,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 12:23:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:58,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:23:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:59,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:59,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:59,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 12:23:59,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-28 12:23:59,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:59,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 12:23:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-28 12:23:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:59,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:59,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:59,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:23:59,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:59,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 12:23:59,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:59,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:23:59,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 342 proven. 4 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-28 12:23:59,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268468492] [2020-10-28 12:23:59,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:59,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:23:59,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254073520] [2020-10-28 12:23:59,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:23:59,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:59,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:23:59,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:59,971 INFO L87 Difference]: Start difference. First operand 82028 states and 101633 transitions. Second operand 7 states.