/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/Problem13_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:29:34,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:29:34,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:29:34,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:29:34,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:29:34,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:29:34,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:29:34,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:29:34,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:29:34,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:29:34,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:29:34,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:29:34,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:29:34,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:29:34,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:29:34,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:29:34,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:29:34,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:29:34,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:29:34,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:29:34,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:29:34,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:29:34,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:29:34,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:29:34,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:29:34,335 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:29:34,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:29:34,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:29:34,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:29:34,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:29:34,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:29:34,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:29:34,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:29:34,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:29:34,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:29:34,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:29:34,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:29:34,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:29:34,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:29:34,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:29:34,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:29:34,373 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 12:29:34,430 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:29:34,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:29:34,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:29:34,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:29:34,438 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:29:34,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:29:34,438 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:29:34,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:29:34,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:29:34,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:29:34,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:29:34,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:29:34,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:29:34,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:29:34,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:29:34,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:29:34,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:29:34,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:29:34,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:29:34,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:29:34,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:29:34,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:29:34,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:29:34,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:29:34,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:29:34,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:29:34,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:29:34,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:29:34,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:29:34,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:29:35,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:29:35,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:29:35,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:29:35,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:29:35,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:29:35,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05.c [2020-10-28 12:29:35,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/643f2ff5a/f69f04ab726d4f448f7c56a1fa255c07/FLAG164f36bce [2020-10-28 12:29:36,417 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:29:36,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label05.c [2020-10-28 12:29:36,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/643f2ff5a/f69f04ab726d4f448f7c56a1fa255c07/FLAG164f36bce [2020-10-28 12:29:36,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/643f2ff5a/f69f04ab726d4f448f7c56a1fa255c07 [2020-10-28 12:29:36,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:29:36,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:29:36,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:29:36,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:29:36,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:29:36,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:29:36" (1/1) ... [2020-10-28 12:29:36,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a6153b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:36, skipping insertion in model container [2020-10-28 12:29:36,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:29:36" (1/1) ... [2020-10-28 12:29:36,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:29:36,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:29:38,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:29:38,977 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:29:39,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:29:39,986 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:29:39,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39 WrapperNode [2020-10-28 12:29:39,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:29:39,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:29:39,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:29:39,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:29:40,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (1/1) ... [2020-10-28 12:29:40,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (1/1) ... [2020-10-28 12:29:40,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (1/1) ... [2020-10-28 12:29:40,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (1/1) ... [2020-10-28 12:29:40,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (1/1) ... [2020-10-28 12:29:40,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (1/1) ... [2020-10-28 12:29:40,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (1/1) ... [2020-10-28 12:29:40,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:29:40,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:29:40,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:29:40,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:29:40,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:29:40,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:29:40,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:29:40,639 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:29:40,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:29:40,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:29:40,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:29:40,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:29:40,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:29:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:29:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:29:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:29:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:29:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:29:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:29:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:29:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:29:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:29:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:29:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:29:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:29:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:29:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:29:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:29:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:29:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:29:51,284 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:29:51,285 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:29:51,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:29:51 BoogieIcfgContainer [2020-10-28 12:29:51,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:29:51,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:29:51,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:29:51,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:29:51,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:29:36" (1/3) ... [2020-10-28 12:29:51,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3905b9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:29:51, skipping insertion in model container [2020-10-28 12:29:51,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:29:39" (2/3) ... [2020-10-28 12:29:51,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3905b9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:29:51, skipping insertion in model container [2020-10-28 12:29:51,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:29:51" (3/3) ... [2020-10-28 12:29:51,299 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label05.c [2020-10-28 12:29:51,312 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:29:51,318 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:29:51,332 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:29:51,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:29:51,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:29:51,380 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:29:51,381 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:29:51,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:29:51,381 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:29:51,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:29:51,381 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:29:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:29:51,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 12:29:51,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:29:51,441 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] [2020-10-28 12:29:51,441 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:29:51,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:29:51,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1017743642, now seen corresponding path program 1 times [2020-10-28 12:29:51,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:29:51,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595917769] [2020-10-28 12:29:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:29:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:51,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:52,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:52,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 12:29:52,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-28 12:29:52,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:52,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:29:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:29:52,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 12:29:52,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:29:52,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:29:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:29:52,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:29:52,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:29:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:29:52,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:29:52,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:29:52,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:29:52,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:29:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:29:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:29:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:29:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:29:52,530 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 12:29:52,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595917769] [2020-10-28 12:29:52,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:29:52,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 12:29:52,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125603635] [2020-10-28 12:29:52,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:29:52,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:29:52,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:29:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:29:52,564 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-28 12:30:13,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:13,389 INFO L93 Difference]: Finished difference Result 4085 states and 7568 transitions. [2020-10-28 12:30:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:30:13,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-28 12:30:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:13,432 INFO L225 Difference]: With dead ends: 4085 [2020-10-28 12:30:13,432 INFO L226 Difference]: Without dead ends: 2873 [2020-10-28 12:30:13,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:30:13,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2020-10-28 12:30:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1935. [2020-10-28 12:30:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1935 states. [2020-10-28 12:30:13,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 3164 transitions. [2020-10-28 12:30:13,618 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 3164 transitions. Word has length 49 [2020-10-28 12:30:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:13,619 INFO L481 AbstractCegarLoop]: Abstraction has 1935 states and 3164 transitions. [2020-10-28 12:30:13,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:30:13,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 3164 transitions. [2020-10-28 12:30:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 12:30:13,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:13,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:13,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:30:13,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:13,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:13,628 INFO L82 PathProgramCache]: Analyzing trace with hash -6498815, now seen corresponding path program 1 times [2020-10-28 12:30:13,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:13,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819155826] [2020-10-28 12:30:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:16,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:16,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 12:30:16,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:30:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2521 [2020-10-28 12:30:16,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:16,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:30:16,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:30:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:30:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:30:16,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:16,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:16,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:16,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:16,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:16,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:30:16,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:16,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:16,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:16,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:30:16,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:30:16,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:16,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:16,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:30:16,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:16,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 12:30:16,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:16,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:30:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:30:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:30:16,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819155826] [2020-10-28 12:30:16,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:30:16,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:30:16,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048257162] [2020-10-28 12:30:16,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:30:16,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:16,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:30:16,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:30:16,764 INFO L87 Difference]: Start difference. First operand 1935 states and 3164 transitions. Second operand 7 states. [2020-10-28 12:30:39,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:30:39,454 INFO L93 Difference]: Finished difference Result 5615 states and 9267 transitions. [2020-10-28 12:30:39,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:30:39,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-28 12:30:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:30:39,484 INFO L225 Difference]: With dead ends: 5615 [2020-10-28 12:30:39,484 INFO L226 Difference]: Without dead ends: 3686 [2020-10-28 12:30:39,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:30:39,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2020-10-28 12:30:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3616. [2020-10-28 12:30:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3616 states. [2020-10-28 12:30:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 5140 transitions. [2020-10-28 12:30:39,618 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 5140 transitions. Word has length 124 [2020-10-28 12:30:39,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:30:39,618 INFO L481 AbstractCegarLoop]: Abstraction has 3616 states and 5140 transitions. [2020-10-28 12:30:39,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:30:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 5140 transitions. [2020-10-28 12:30:39,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 12:30:39,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:30:39,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:30:39,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:30:39,623 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:30:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:30:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash 233255581, now seen corresponding path program 1 times [2020-10-28 12:30:39,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:30:39,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157691699] [2020-10-28 12:30:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:30:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:40,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:40,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:40,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 12:30:40,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:30:40,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-10-28 12:30:40,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:40,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:30:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:30:40,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:30:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:30:40,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:30:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:40,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:40,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:40,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:30:40,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:30:40,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:40,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:30:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:30:40,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:30:40,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:30:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:30:40,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:30:41,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:30:41,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:30:41,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:30:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 12:30:41,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:30:41,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:30:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:30:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:30:41,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:30:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:30:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:30:41,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157691699] [2020-10-28 12:30:41,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:30:41,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:30:41,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486453163] [2020-10-28 12:30:41,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:30:41,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:30:41,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:30:41,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:30:41,451 INFO L87 Difference]: Start difference. First operand 3616 states and 5140 transitions. Second operand 7 states. [2020-10-28 12:31:01,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:31:01,306 INFO L93 Difference]: Finished difference Result 10687 states and 15405 transitions. [2020-10-28 12:31:01,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:31:01,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-28 12:31:01,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:31:01,351 INFO L225 Difference]: With dead ends: 10687 [2020-10-28 12:31:01,351 INFO L226 Difference]: Without dead ends: 7077 [2020-10-28 12:31:01,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:31:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2020-10-28 12:31:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 6986. [2020-10-28 12:31:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6986 states. [2020-10-28 12:31:01,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6986 states to 6986 states and 8995 transitions. [2020-10-28 12:31:01,621 INFO L78 Accepts]: Start accepts. Automaton has 6986 states and 8995 transitions. Word has length 154 [2020-10-28 12:31:01,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:31:01,622 INFO L481 AbstractCegarLoop]: Abstraction has 6986 states and 8995 transitions. [2020-10-28 12:31:01,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:31:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6986 states and 8995 transitions. [2020-10-28 12:31:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-28 12:31:01,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:31:01,627 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:31:01,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:31:01,628 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:31:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:31:01,628 INFO L82 PathProgramCache]: Analyzing trace with hash 201575094, now seen corresponding path program 1 times [2020-10-28 12:31:01,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:31:01,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431977078] [2020-10-28 12:31:01,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:31:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:01,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:02,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:06,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:06,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 12:31:06,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:31:06,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 12:31:06,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:06,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:31:06,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:31:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:31:06,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:31:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:06,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:06,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:06,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:31:06,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:31:06,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:06,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:31:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:06,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:31:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:06,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:31:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:07,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:07,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:31:07,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:07,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:31:07,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:07,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:31:07,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:07,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:31:07,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:31:07,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:31:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:07,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:07,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:07,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:31:07,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-28 12:31:07,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:07,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:31:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:31:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:31:07,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431977078] [2020-10-28 12:31:07,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:31:07,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:31:07,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046639328] [2020-10-28 12:31:07,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:31:07,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:31:07,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:31:07,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:31:07,627 INFO L87 Difference]: Start difference. First operand 6986 states and 8995 transitions. Second operand 7 states. [2020-10-28 12:31:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:31:34,160 INFO L93 Difference]: Finished difference Result 18483 states and 25039 transitions. [2020-10-28 12:31:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:31:34,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-28 12:31:34,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:31:34,241 INFO L225 Difference]: With dead ends: 18483 [2020-10-28 12:31:34,241 INFO L226 Difference]: Without dead ends: 12306 [2020-10-28 12:31:34,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:31:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12306 states. [2020-10-28 12:31:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12306 to 12160. [2020-10-28 12:31:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12160 states. [2020-10-28 12:31:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12160 states to 12160 states and 16370 transitions. [2020-10-28 12:31:34,673 INFO L78 Accepts]: Start accepts. Automaton has 12160 states and 16370 transitions. Word has length 249 [2020-10-28 12:31:34,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:31:34,674 INFO L481 AbstractCegarLoop]: Abstraction has 12160 states and 16370 transitions. [2020-10-28 12:31:34,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:31:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12160 states and 16370 transitions. [2020-10-28 12:31:34,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-28 12:31:34,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:31:34,679 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:31:34,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:31:34,680 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:31:34,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:31:34,681 INFO L82 PathProgramCache]: Analyzing trace with hash -178960166, now seen corresponding path program 1 times [2020-10-28 12:31:34,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:31:34,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515582004] [2020-10-28 12:31:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:31:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:35,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:38,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:38,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-28 12:31:38,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:31:38,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3360 [2020-10-28 12:31:38,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:38,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:31:38,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:31:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:31:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:38,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:38,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:31:38,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:38,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:31:38,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:38,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:31:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:38,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:31:38,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:31:38,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:31:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:38,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:38,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:38,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:31:38,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:38,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 12:31:38,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:38,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:38,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:31:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:38,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:31:38,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:38,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:31:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:38,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:38,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:31:38,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:38,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 12:31:38,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:38,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:31:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:31:38,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:31:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:31:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 155 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:31:38,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515582004] [2020-10-28 12:31:38,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:31:38,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:31:38,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503421344] [2020-10-28 12:31:38,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:31:38,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:31:38,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:31:38,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:31:38,937 INFO L87 Difference]: Start difference. First operand 12160 states and 16370 transitions. Second operand 7 states. [2020-10-28 12:32:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:08,173 INFO L93 Difference]: Finished difference Result 33173 states and 48073 transitions. [2020-10-28 12:32:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:32:08,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-28 12:32:08,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:08,262 INFO L225 Difference]: With dead ends: 33173 [2020-10-28 12:32:08,263 INFO L226 Difference]: Without dead ends: 21822 [2020-10-28 12:32:08,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:32:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21822 states. [2020-10-28 12:32:09,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21822 to 20846. [2020-10-28 12:32:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20846 states. [2020-10-28 12:32:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20846 states to 20846 states and 27926 transitions. [2020-10-28 12:32:09,065 INFO L78 Accepts]: Start accepts. Automaton has 20846 states and 27926 transitions. Word has length 254 [2020-10-28 12:32:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:09,066 INFO L481 AbstractCegarLoop]: Abstraction has 20846 states and 27926 transitions. [2020-10-28 12:32:09,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:32:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 20846 states and 27926 transitions. [2020-10-28 12:32:09,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-28 12:32:09,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:09,073 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:32:09,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:32:09,074 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash -948901381, now seen corresponding path program 1 times [2020-10-28 12:32:09,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:09,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946595011] [2020-10-28 12:32:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:09,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:09,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:10,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:10,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:11,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:11,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-28 12:32:11,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:32:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2170 [2020-10-28 12:32:11,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:11,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:32:11,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 12:32:11,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:11,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:11,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:11,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:11,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:11,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:11,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:32:11,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:11,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:11,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:11,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:32:11,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:32:11,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:32:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:11,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:11,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:11,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:32:11,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:32:11,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-28 12:32:11,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:11,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:11,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:32:11,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:11,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:32:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:12,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:12,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:12,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:32:12,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:32:12,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 12:32:12,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:12,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 12:32:12,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:32:12,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:32:12,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946595011] [2020-10-28 12:32:12,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:32:12,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:32:12,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825874331] [2020-10-28 12:32:12,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:32:12,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:12,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:32:12,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:32:12,407 INFO L87 Difference]: Start difference. First operand 20846 states and 27926 transitions. Second operand 6 states. [2020-10-28 12:32:12,562 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:32:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:31,350 INFO L93 Difference]: Finished difference Result 35126 states and 48119 transitions. [2020-10-28 12:32:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:32:31,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2020-10-28 12:32:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:31,474 INFO L225 Difference]: With dead ends: 35126 [2020-10-28 12:32:31,474 INFO L226 Difference]: Without dead ends: 20838 [2020-10-28 12:32:31,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:31,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20838 states. [2020-10-28 12:32:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20838 to 20836. [2020-10-28 12:32:32,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20836 states. [2020-10-28 12:32:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20836 states to 20836 states and 27903 transitions. [2020-10-28 12:32:32,365 INFO L78 Accepts]: Start accepts. Automaton has 20836 states and 27903 transitions. Word has length 268 [2020-10-28 12:32:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:32,367 INFO L481 AbstractCegarLoop]: Abstraction has 20836 states and 27903 transitions. [2020-10-28 12:32:32,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:32:32,367 INFO L276 IsEmpty]: Start isEmpty. Operand 20836 states and 27903 transitions. [2020-10-28 12:32:32,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 12:32:32,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:32,374 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:32:32,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:32:32,375 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:32,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1588132497, now seen corresponding path program 1 times [2020-10-28 12:32:32,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:32,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990452780] [2020-10-28 12:32:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:32,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:33,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:34,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:34,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 12:32:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:32:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2402 [2020-10-28 12:32:34,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:34,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:32:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:32:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:35,087 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:32:35,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:35,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:35,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 12:32:35,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:35,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:35,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:32:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:35,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:32:35,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:32:35,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:32:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:35,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:35,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:32:35,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:35,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 12:32:35,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:35,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:35,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:35,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:32:35,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:35,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:32:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:35,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:35,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 12:32:35,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:35,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 12:32:35,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:35,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:35,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:32:35,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:32:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:32:35,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990452780] [2020-10-28 12:32:35,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:32:35,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:32:35,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326627985] [2020-10-28 12:32:35,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:32:35,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:35,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:32:35,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:35,962 INFO L87 Difference]: Start difference. First operand 20836 states and 27903 transitions. Second operand 7 states. [2020-10-28 12:33:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:15,329 INFO L93 Difference]: Finished difference Result 48943 states and 69734 transitions. [2020-10-28 12:33:15,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:33:15,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-28 12:33:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:15,494 INFO L225 Difference]: With dead ends: 48943 [2020-10-28 12:33:15,495 INFO L226 Difference]: Without dead ends: 34665 [2020-10-28 12:33:15,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:33:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34665 states. [2020-10-28 12:33:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34665 to 31179. [2020-10-28 12:33:16,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31179 states. [2020-10-28 12:33:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31179 states to 31179 states and 40321 transitions. [2020-10-28 12:33:16,605 INFO L78 Accepts]: Start accepts. Automaton has 31179 states and 40321 transitions. Word has length 273 [2020-10-28 12:33:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:16,606 INFO L481 AbstractCegarLoop]: Abstraction has 31179 states and 40321 transitions. [2020-10-28 12:33:16,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:33:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 31179 states and 40321 transitions. [2020-10-28 12:33:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-28 12:33:16,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:16,615 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:33:16,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:33:16,616 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:16,617 INFO L82 PathProgramCache]: Analyzing trace with hash 891662337, now seen corresponding path program 1 times [2020-10-28 12:33:16,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:16,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920320463] [2020-10-28 12:33:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:16,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:17,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:17,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking...