/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:20:44,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:20:44,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:20:44,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:20:44,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:20:44,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:20:44,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:20:44,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:20:44,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:20:44,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:20:44,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:20:44,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:20:44,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:20:44,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:20:44,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:20:44,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:20:44,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:20:44,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:20:44,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:20:44,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:20:44,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:20:44,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:20:44,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:20:44,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:20:44,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:20:44,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:20:44,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:20:44,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:20:44,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:20:44,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:20:44,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:20:44,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:20:44,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:20:44,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:20:44,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:20:44,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:20:44,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:20:44,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:20:44,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:20:44,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:20:44,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:20:44,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:20:44,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:20:44,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:20:44,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:20:44,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:20:44,511 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:20:44,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:20:44,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:20:44,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:20:44,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:20:44,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:20:44,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:20:44,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:20:44,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:20:44,514 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:20:44,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:20:44,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:20:44,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:20:44,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:20:44,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:20:44,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:20:44,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:20:44,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:20:44,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:20:44,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:20:44,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:20:44,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:20:44,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:20:44,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:20:44,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:20:44,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:20:44,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:20:45,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:20:45,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:20:45,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:20:45,007 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:20:45,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2020-10-29 07:20:45,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e91798f/cdb4008030584742a90e344c4d811ab7/FLAG48a32581a [2020-10-29 07:20:46,294 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:20:46,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label42.c [2020-10-29 07:20:46,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e91798f/cdb4008030584742a90e344c4d811ab7/FLAG48a32581a [2020-10-29 07:20:46,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e91798f/cdb4008030584742a90e344c4d811ab7 [2020-10-29 07:20:46,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:20:46,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:20:46,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:20:46,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:20:46,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:20:46,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:20:46" (1/1) ... [2020-10-29 07:20:46,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ba39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:46, skipping insertion in model container [2020-10-29 07:20:46,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:20:46" (1/1) ... [2020-10-29 07:20:46,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:20:46,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:20:48,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:20:48,639 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:20:49,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:20:49,522 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:20:49,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49 WrapperNode [2020-10-29 07:20:49,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:20:49,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:20:49,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:20:49,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:20:49,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (1/1) ... [2020-10-29 07:20:49,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (1/1) ... [2020-10-29 07:20:49,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (1/1) ... [2020-10-29 07:20:49,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (1/1) ... [2020-10-29 07:20:49,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (1/1) ... [2020-10-29 07:20:49,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (1/1) ... [2020-10-29 07:20:50,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (1/1) ... [2020-10-29 07:20:50,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:20:50,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:20:50,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:20:50,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:20:50,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:20:50,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:20:50,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:20:50,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:20:50,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:20:50,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:20:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:20:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:20:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:20:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:20:50,186 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:20:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:20:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:20:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:20:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:20:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:20:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:20:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:20:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:20:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:20:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:20:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:20:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:20:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:20:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:20:50,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:21:01,237 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:21:01,237 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:21:01,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:21:01 BoogieIcfgContainer [2020-10-29 07:21:01,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:21:01,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:21:01,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:21:01,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:21:01,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:20:46" (1/3) ... [2020-10-29 07:21:01,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615f31a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:21:01, skipping insertion in model container [2020-10-29 07:21:01,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:20:49" (2/3) ... [2020-10-29 07:21:01,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615f31a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:21:01, skipping insertion in model container [2020-10-29 07:21:01,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:21:01" (3/3) ... [2020-10-29 07:21:01,253 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label42.c [2020-10-29 07:21:01,267 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:21:01,275 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:21:01,292 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:21:01,335 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:21:01,335 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:21:01,335 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:21:01,336 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:21:01,336 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:21:01,336 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:21:01,336 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:21:01,336 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:21:01,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:21:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 07:21:01,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:21:01,395 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, 1, 1] [2020-10-29 07:21:01,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:21:01,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:21:01,404 INFO L82 PathProgramCache]: Analyzing trace with hash 115140930, now seen corresponding path program 1 times [2020-10-29 07:21:01,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:21:01,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165123000] [2020-10-29 07:21:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:21:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:01,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:02,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:02,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:21:02,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:02,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-29 07:21:02,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:02,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:21:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:21:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 07:21:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:21:02,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:21:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:02,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:02,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:21:02,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:21:02,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:02,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:02,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:21:02,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:02,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:21:02,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:21:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:21:02,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165123000] [2020-10-29 07:21:02,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:21:02,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:21:02,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863597223] [2020-10-29 07:21:02,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:21:02,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:21:02,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:21:02,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:21:02,929 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:21:22,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:21:22,073 INFO L93 Difference]: Finished difference Result 3209 states and 5919 transitions. [2020-10-29 07:21:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:21:22,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-29 07:21:22,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:21:22,130 INFO L225 Difference]: With dead ends: 3209 [2020-10-29 07:21:22,131 INFO L226 Difference]: Without dead ends: 2007 [2020-10-29 07:21:22,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:21:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2020-10-29 07:21:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1921. [2020-10-29 07:21:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2020-10-29 07:21:22,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3312 transitions. [2020-10-29 07:21:22,446 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3312 transitions. Word has length 72 [2020-10-29 07:21:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:21:22,447 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3312 transitions. [2020-10-29 07:21:22,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:21:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3312 transitions. [2020-10-29 07:21:22,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 07:21:22,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:21:22,465 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:21:22,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:21:22,467 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:21:22,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:21:22,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1248971450, now seen corresponding path program 1 times [2020-10-29 07:21:22,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:21:22,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195035973] [2020-10-29 07:21:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:21:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:22,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:23,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:25,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:25,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 07:21:25,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:21:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2464 [2020-10-29 07:21:25,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:25,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:25,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:21:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 07:21:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:21:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 07:21:25,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:21:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:25,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:25,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:25,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:21:25,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:25,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:21:25,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:25,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:21:25,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:25,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:21:25,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:21:25,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:21:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:25,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:25,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:21:25,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:25,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:21:25,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:25,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:21:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:25,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:21:25,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:21:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:21:25,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195035973] [2020-10-29 07:21:25,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:21:25,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:21:25,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740086527] [2020-10-29 07:21:25,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:21:25,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:21:25,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:21:25,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:21:25,567 INFO L87 Difference]: Start difference. First operand 1921 states and 3312 transitions. Second operand 5 states. [2020-10-29 07:21:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:21:45,770 INFO L93 Difference]: Finished difference Result 5638 states and 9815 transitions. [2020-10-29 07:21:45,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:21:45,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-29 07:21:45,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:21:45,800 INFO L225 Difference]: With dead ends: 5638 [2020-10-29 07:21:45,800 INFO L226 Difference]: Without dead ends: 3723 [2020-10-29 07:21:45,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:21:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3723 states. [2020-10-29 07:21:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3723 to 3704. [2020-10-29 07:21:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3704 states. [2020-10-29 07:21:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 5852 transitions. [2020-10-29 07:21:45,942 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 5852 transitions. Word has length 141 [2020-10-29 07:21:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:21:45,942 INFO L481 AbstractCegarLoop]: Abstraction has 3704 states and 5852 transitions. [2020-10-29 07:21:45,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:21:45,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 5852 transitions. [2020-10-29 07:21:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 07:21:45,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:21:45,946 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:21:45,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:21:45,947 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:21:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:21:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash 7592858, now seen corresponding path program 1 times [2020-10-29 07:21:45,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:21:45,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657552990] [2020-10-29 07:21:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:21:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:46,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:47,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:48,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:48,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 07:21:48,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:21:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2177 [2020-10-29 07:21:48,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:48,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:21:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:21:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:21:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:21:48,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:21:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:48,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:48,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:48,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:21:48,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:21:48,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:48,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:21:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:48,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:21:48,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:21:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:21:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:21:48,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:21:48,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:21:48,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:21:48,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:21:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:21:48,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:21:48,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:21:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:21:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:21:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:21:48,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:21:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:21:48,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657552990] [2020-10-29 07:21:48,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:21:48,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:21:48,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794019703] [2020-10-29 07:21:48,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:21:48,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:21:48,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:21:48,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:21:48,492 INFO L87 Difference]: Start difference. First operand 3704 states and 5852 transitions. Second operand 5 states. [2020-10-29 07:22:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:08,835 INFO L93 Difference]: Finished difference Result 10723 states and 17212 transitions. [2020-10-29 07:22:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:22:08,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-29 07:22:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:08,880 INFO L225 Difference]: With dead ends: 10723 [2020-10-29 07:22:08,881 INFO L226 Difference]: Without dead ends: 7025 [2020-10-29 07:22:08,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:22:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2020-10-29 07:22:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 6984. [2020-10-29 07:22:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6984 states. [2020-10-29 07:22:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 9868 transitions. [2020-10-29 07:22:09,127 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 9868 transitions. Word has length 147 [2020-10-29 07:22:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:09,129 INFO L481 AbstractCegarLoop]: Abstraction has 6984 states and 9868 transitions. [2020-10-29 07:22:09,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:22:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 9868 transitions. [2020-10-29 07:22:09,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-29 07:22:09,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:09,138 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:22:09,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:22:09,139 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:09,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1455379546, now seen corresponding path program 1 times [2020-10-29 07:22:09,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:09,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583867196] [2020-10-29 07:22:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:09,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:10,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:10,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 07:22:10,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:22:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1412 [2020-10-29 07:22:10,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:10,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:22:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:10,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:22:10,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:10,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:10,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:10,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:10,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:10,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:22:10,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:10,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:10,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:10,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:10,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:10,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:10,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:10,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:22:10,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:10,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-29 07:22:10,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:10,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:10,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:22:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:22:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:11,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583867196] [2020-10-29 07:22:11,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:22:11,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:22:11,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764499888] [2020-10-29 07:22:11,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:22:11,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:11,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:22:11,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:22:11,119 INFO L87 Difference]: Start difference. First operand 6984 states and 9868 transitions. Second operand 7 states. [2020-10-29 07:22:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:22:34,397 INFO L93 Difference]: Finished difference Result 17565 states and 26056 transitions. [2020-10-29 07:22:34,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:22:34,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-29 07:22:34,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:22:34,472 INFO L225 Difference]: With dead ends: 17565 [2020-10-29 07:22:34,472 INFO L226 Difference]: Without dead ends: 10587 [2020-10-29 07:22:34,495 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 [2020-10-29 07:22:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10587 states. [2020-10-29 07:22:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10587 to 10488. [2020-10-29 07:22:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10488 states. [2020-10-29 07:22:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10488 states to 10488 states and 14350 transitions. [2020-10-29 07:22:34,834 INFO L78 Accepts]: Start accepts. Automaton has 10488 states and 14350 transitions. Word has length 179 [2020-10-29 07:22:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:22:34,834 INFO L481 AbstractCegarLoop]: Abstraction has 10488 states and 14350 transitions. [2020-10-29 07:22:34,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:22:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 10488 states and 14350 transitions. [2020-10-29 07:22:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-29 07:22:34,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:22:34,840 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, 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] [2020-10-29 07:22:34,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:22:34,840 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:22:34,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:22:34,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1708106934, now seen corresponding path program 1 times [2020-10-29 07:22:34,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:22:34,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353601919] [2020-10-29 07:22:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:22:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:34,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:35,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:35,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:36,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:36,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-29 07:22:36,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:22:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2114 [2020-10-29 07:22:36,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:36,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 07:22:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:22:36,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-29 07:22:36,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:37,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:22:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:37,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:37,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:37,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:22:37,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:22:37,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:22:37,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:37,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:37,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:22:37,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:22:37,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:22:37,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:37,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:22:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:22:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:37,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:22:37,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:22:37,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:22:37,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:22:37,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-29 07:22:37,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:22:37,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:22:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:22:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:22:37,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:22:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:22:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:22:37,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353601919] [2020-10-29 07:22:37,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:22:37,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:22:37,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359265427] [2020-10-29 07:22:37,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:22:37,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:22:37,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:22:37,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:22:37,983 INFO L87 Difference]: Start difference. First operand 10488 states and 14350 transitions. Second operand 8 states. [2020-10-29 07:23:15,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:15,694 INFO L93 Difference]: Finished difference Result 32107 states and 46937 transitions. [2020-10-29 07:23:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:23:15,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 190 [2020-10-29 07:23:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:15,787 INFO L225 Difference]: With dead ends: 32107 [2020-10-29 07:23:15,787 INFO L226 Difference]: Without dead ends: 21625 [2020-10-29 07:23:15,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:23:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21625 states. [2020-10-29 07:23:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21625 to 21558. [2020-10-29 07:23:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21558 states. [2020-10-29 07:23:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21558 states to 21558 states and 28495 transitions. [2020-10-29 07:23:16,473 INFO L78 Accepts]: Start accepts. Automaton has 21558 states and 28495 transitions. Word has length 190 [2020-10-29 07:23:16,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:16,473 INFO L481 AbstractCegarLoop]: Abstraction has 21558 states and 28495 transitions. [2020-10-29 07:23:16,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:23:16,474 INFO L276 IsEmpty]: Start isEmpty. Operand 21558 states and 28495 transitions. [2020-10-29 07:23:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 07:23:16,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:16,480 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, 3, 3, 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] [2020-10-29 07:23:16,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:23:16,481 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:16,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:16,481 INFO L82 PathProgramCache]: Analyzing trace with hash -970083227, now seen corresponding path program 1 times [2020-10-29 07:23:16,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:16,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954944898] [2020-10-29 07:23:16,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:17,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:18,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:21,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:21,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-29 07:23:21,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:23:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 07:23:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:21,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:23:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:23:21,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-29 07:23:21,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:21,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:21,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:21,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:21,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:21,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:23:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:21,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:23:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:21,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:21,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:21,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:23:21,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 07:23:21,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:21,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:21,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:21,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:23:21,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:23:22,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:23:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:22,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:22,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:22,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:23:22,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:23:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 07:23:22,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:22,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:23:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:23:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:23:22,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954944898] [2020-10-29 07:23:22,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:22,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:23:22,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272973993] [2020-10-29 07:23:22,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:22,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:22,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:22,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:22,513 INFO L87 Difference]: Start difference. First operand 21558 states and 28495 transitions. Second operand 7 states. [2020-10-29 07:23:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:23:51,027 INFO L93 Difference]: Finished difference Result 61193 states and 86964 transitions. [2020-10-29 07:23:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:23:51,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-29 07:23:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:23:51,250 INFO L225 Difference]: With dead ends: 61193 [2020-10-29 07:23:51,250 INFO L226 Difference]: Without dead ends: 37233 [2020-10-29 07:23:51,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:23:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37233 states. [2020-10-29 07:23:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37233 to 32294. [2020-10-29 07:23:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32294 states. [2020-10-29 07:23:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32294 states to 32294 states and 43723 transitions. [2020-10-29 07:23:52,690 INFO L78 Accepts]: Start accepts. Automaton has 32294 states and 43723 transitions. Word has length 247 [2020-10-29 07:23:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:23:52,691 INFO L481 AbstractCegarLoop]: Abstraction has 32294 states and 43723 transitions. [2020-10-29 07:23:52,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:23:52,691 INFO L276 IsEmpty]: Start isEmpty. Operand 32294 states and 43723 transitions. [2020-10-29 07:23:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-29 07:23:52,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:23:52,701 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:23:52,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:23:52,701 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:23:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:23:52,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1693042554, now seen corresponding path program 1 times [2020-10-29 07:23:52,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:23:52,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426844988] [2020-10-29 07:23:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:23:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:53,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:53,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:58,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:58,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 07:23:58,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:23:58,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-29 07:23:58,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:58,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:58,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:23:58,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:23:58,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:23:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:58,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:58,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:23:58,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:23:58,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:58,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:23:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:58,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:23:58,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:58,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:23:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:58,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:58,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:23:58,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 07:23:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:58,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:23:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:23:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:23:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:23:58,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:23:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:23:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:23:58,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:23:58,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:23:58,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:23:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 07:23:58,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:23:58,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:23:58,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:23:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:23:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:23:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:23:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:23:58,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426844988] [2020-10-29 07:23:58,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:23:58,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:23:58,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870663782] [2020-10-29 07:23:58,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:23:58,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:23:58,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:23:58,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:23:58,912 INFO L87 Difference]: Start difference. First operand 32294 states and 43723 transitions. Second operand 7 states. [2020-10-29 07:23:59,070 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:24:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:24:30,177 INFO L93 Difference]: Finished difference Result 85263 states and 123704 transitions. [2020-10-29 07:24:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:24:30,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-29 07:24:30,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:24:30,489 INFO L225 Difference]: With dead ends: 85263 [2020-10-29 07:24:30,489 INFO L226 Difference]: Without dead ends: 53778 [2020-10-29 07:24:30,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:24:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53778 states.