/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:20:45,169 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:20:45,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:20:45,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:20:45,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:20:45,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:20:45,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:20:45,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:20:45,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:20:45,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:20:45,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:20:45,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:20:45,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:20:45,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:20:45,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:20:45,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:20:45,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:20:45,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:20:45,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:20:45,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:20:45,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:20:45,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:20:45,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:20:45,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:20:45,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:20:45,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:20:45,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:20:45,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:20:45,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:20:45,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:20:45,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:20:45,328 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:20:45,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:20:45,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:20:45,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:20:45,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:20:45,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:20:45,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:20:45,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:20:45,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:20:45,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:20:45,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:20:45,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:20:45,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:20:45,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:20:45,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:20:45,397 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:20:45,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:20:45,398 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:20:45,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:20:45,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:20:45,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:20:45,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:20:45,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:20:45,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:20:45,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:20:45,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:20:45,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:20:45,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:20:45,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:20:45,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:20:45,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:20:45,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:20:45,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:20:45,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:20:45,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:20:45,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:20:45,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:20:45,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:20:45,403 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:20:45,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:20:45,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:20:45,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:20:45,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:20:45,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:20:45,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:20:45,897 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:20:45,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32.c [2020-10-28 12:20:45,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88e085d6b/dbd0700f358b4f80890b50ecbd079bf2/FLAGac9a8aca6 [2020-10-28 12:20:47,000 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:20:47,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label32.c [2020-10-28 12:20:47,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88e085d6b/dbd0700f358b4f80890b50ecbd079bf2/FLAGac9a8aca6 [2020-10-28 12:20:47,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88e085d6b/dbd0700f358b4f80890b50ecbd079bf2 [2020-10-28 12:20:47,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:20:47,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:20:47,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:20:47,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:20:47,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:20:47,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:20:47" (1/1) ... [2020-10-28 12:20:47,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d774bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:47, skipping insertion in model container [2020-10-28 12:20:47,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:20:47" (1/1) ... [2020-10-28 12:20:47,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:20:47,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:20:49,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:20:49,050 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:20:49,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:20:49,809 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:20:49,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49 WrapperNode [2020-10-28 12:20:49,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:20:49,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:20:49,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:20:49,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:20:49,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (1/1) ... [2020-10-28 12:20:49,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (1/1) ... [2020-10-28 12:20:49,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (1/1) ... [2020-10-28 12:20:49,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (1/1) ... [2020-10-28 12:20:50,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (1/1) ... [2020-10-28 12:20:50,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (1/1) ... [2020-10-28 12:20:50,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (1/1) ... [2020-10-28 12:20:50,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:20:50,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:20:50,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:20:50,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:20:50,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (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 [2020-10-28 12:20:50,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:20:50,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:20:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:20:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:20:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:20:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:20:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:20:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:20:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:20:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:20:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:20:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:20:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:20:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:20:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:20:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:20:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:20:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:20:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:20:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:20:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:20:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:20:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:20:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:20:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:20:55,132 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:20:55,133 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:20:55,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:20:55 BoogieIcfgContainer [2020-10-28 12:20:55,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:20:55,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:20:55,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:20:55,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:20:55,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:20:47" (1/3) ... [2020-10-28 12:20:55,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1653d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:20:55, skipping insertion in model container [2020-10-28 12:20:55,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:20:49" (2/3) ... [2020-10-28 12:20:55,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1653d9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:20:55, skipping insertion in model container [2020-10-28 12:20:55,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:20:55" (3/3) ... [2020-10-28 12:20:55,150 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label32.c [2020-10-28 12:20:55,162 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:20:55,168 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:20:55,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:20:55,225 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:20:55,226 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:20:55,226 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:20:55,226 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:20:55,226 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:20:55,226 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:20:55,227 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:20:55,227 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:20:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:20:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 12:20:55,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:20:55,282 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] [2020-10-28 12:20:55,283 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:20:55,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:20:55,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1436250660, now seen corresponding path program 1 times [2020-10-28 12:20:55,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:20:55,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023786033] [2020-10-28 12:20:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:20:55,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:56,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:56,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 12:20:56,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-28 12:20:56,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:56,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:20:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:20:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 12:20:56,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:20:56,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:20:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:20:56,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:20:56,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:20:56,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:20:56,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:20:56,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:20:56,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:20:56,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:20:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:20:56,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:20:56,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:20:56,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:20:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:20:56,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023786033] [2020-10-28 12:20:56,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:20:56,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:20:56,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029872918] [2020-10-28 12:20:56,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:20:56,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:20:56,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:20:56,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:20:56,510 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:21:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:07,657 INFO L93 Difference]: Finished difference Result 2492 states and 4750 transitions. [2020-10-28 12:21:07,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:21:07,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 12:21:07,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:07,697 INFO L225 Difference]: With dead ends: 2492 [2020-10-28 12:21:07,698 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:21:07,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:21:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:21:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:21:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:21:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2470 transitions. [2020-10-28 12:21:07,896 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2470 transitions. Word has length 50 [2020-10-28 12:21:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:07,896 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2470 transitions. [2020-10-28 12:21:07,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:21:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2470 transitions. [2020-10-28 12:21:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 12:21:07,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:07,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:07,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:21:07,903 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:07,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:07,904 INFO L82 PathProgramCache]: Analyzing trace with hash -877610380, now seen corresponding path program 1 times [2020-10-28 12:21:07,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:07,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599719453] [2020-10-28 12:21:07,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:08,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:09,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:09,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:09,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:21:09,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:21:09,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-28 12:21:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:09,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:09,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:21:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:09,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:09,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:09,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:09,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:21:09,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:09,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:09,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:21:09,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:10,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:10,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:21:10,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:21:10,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:10,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:21:10,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:10,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599719453] [2020-10-28 12:21:10,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:10,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:21:10,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908001759] [2020-10-28 12:21:10,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:10,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:10,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:10,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:10,198 INFO L87 Difference]: Start difference. First operand 1554 states and 2470 transitions. Second operand 7 states. [2020-10-28 12:21:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:23,756 INFO L93 Difference]: Finished difference Result 4730 states and 7518 transitions. [2020-10-28 12:21:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:21:23,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 12:21:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:23,775 INFO L225 Difference]: With dead ends: 4730 [2020-10-28 12:21:23,775 INFO L226 Difference]: Without dead ends: 3182 [2020-10-28 12:21:23,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:21:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2020-10-28 12:21:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 3118. [2020-10-28 12:21:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3118 states. [2020-10-28 12:21:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4520 transitions. [2020-10-28 12:21:23,915 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4520 transitions. Word has length 122 [2020-10-28 12:21:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:23,918 INFO L481 AbstractCegarLoop]: Abstraction has 3118 states and 4520 transitions. [2020-10-28 12:21:23,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4520 transitions. [2020-10-28 12:21:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 12:21:23,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:23,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:23,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:21:23,930 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:23,931 INFO L82 PathProgramCache]: Analyzing trace with hash -620596548, now seen corresponding path program 1 times [2020-10-28 12:21:23,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:23,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685820375] [2020-10-28 12:21:23,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:24,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:25,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:25,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 12:21:25,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:21:25,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1335 [2020-10-28 12:21:25,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:25,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:25,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:21:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:21:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:25,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:25,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:25,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:25,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:21:25,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:25,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:25,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:25,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:25,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:25,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:25,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:25,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:21:25,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:25,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 12:21:25,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:25,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:25,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 12:21:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:25,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685820375] [2020-10-28 12:21:25,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:25,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:21:25,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497141975] [2020-10-28 12:21:25,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:25,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:25,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:25,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:25,825 INFO L87 Difference]: Start difference. First operand 3118 states and 4520 transitions. Second operand 7 states. [2020-10-28 12:21:39,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:39,669 INFO L93 Difference]: Finished difference Result 9493 states and 13813 transitions. [2020-10-28 12:21:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:21:39,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2020-10-28 12:21:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:39,702 INFO L225 Difference]: With dead ends: 9493 [2020-10-28 12:21:39,703 INFO L226 Difference]: Without dead ends: 6381 [2020-10-28 12:21:39,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:21:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2020-10-28 12:21:39,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 6278. [2020-10-28 12:21:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-10-28 12:21:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 8009 transitions. [2020-10-28 12:21:39,893 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 8009 transitions. Word has length 150 [2020-10-28 12:21:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:39,894 INFO L481 AbstractCegarLoop]: Abstraction has 6278 states and 8009 transitions. [2020-10-28 12:21:39,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 8009 transitions. [2020-10-28 12:21:39,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-28 12:21:39,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:39,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:21:39,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:21:39,899 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:39,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:39,899 INFO L82 PathProgramCache]: Analyzing trace with hash 836639836, now seen corresponding path program 1 times [2020-10-28 12:21:39,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:39,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708276897] [2020-10-28 12:21:39,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:41,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:41,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-28 12:21:41,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:21:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2016 [2020-10-28 12:21:41,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:41,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:21:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:21:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:21:41,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:42,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:42,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:42,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:42,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:21:42,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:42,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:42,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:21:42,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:42,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:42,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:42,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:21:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 12:21:42,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:42,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:42,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:21:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:21:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:21:42,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708276897] [2020-10-28 12:21:42,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:21:42,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:21:42,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823458920] [2020-10-28 12:21:42,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:42,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:42,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:42,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:42,928 INFO L87 Difference]: Start difference. First operand 6278 states and 8009 transitions. Second operand 7 states. [2020-10-28 12:21:55,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:21:55,426 INFO L93 Difference]: Finished difference Result 9746 states and 12833 transitions. [2020-10-28 12:21:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:21:55,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-28 12:21:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:21:55,470 INFO L225 Difference]: With dead ends: 9746 [2020-10-28 12:21:55,471 INFO L226 Difference]: Without dead ends: 6567 [2020-10-28 12:21:55,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:21:55,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6567 states. [2020-10-28 12:21:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6567 to 6338. [2020-10-28 12:21:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6338 states. [2020-10-28 12:21:55,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6338 states to 6338 states and 8074 transitions. [2020-10-28 12:21:55,663 INFO L78 Accepts]: Start accepts. Automaton has 6338 states and 8074 transitions. Word has length 198 [2020-10-28 12:21:55,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:21:55,664 INFO L481 AbstractCegarLoop]: Abstraction has 6338 states and 8074 transitions. [2020-10-28 12:21:55,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:21:55,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6338 states and 8074 transitions. [2020-10-28 12:21:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-28 12:21:55,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:21:55,669 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:21:55,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:21:55,669 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:21:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:21:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1461474970, now seen corresponding path program 1 times [2020-10-28 12:21:55,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:21:55,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495091695] [2020-10-28 12:21:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:21:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:55,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:55,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:57,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:57,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-28 12:21:57,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:21:57,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-28 12:21:57,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:57,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:21:57,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:21:57,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:21:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:57,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:57,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:57,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:21:57,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:57,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:21:57,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:57,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:21:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:57,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:21:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:21:57,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:21:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:57,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:57,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:57,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:21:57,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:21:57,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:57,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:21:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:21:57,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:21:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:57,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:21:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:21:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:21:57,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:21:57,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:21:57,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:21:57,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 12:21:57,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:21:57,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:21:57,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:21:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:21:57,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 12:21:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:21:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:21:58,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495091695] [2020-10-28 12:21:58,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:21:58,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:21:58,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62206334] [2020-10-28 12:21:58,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:21:58,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:21:58,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:21:58,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:21:58,023 INFO L87 Difference]: Start difference. First operand 6338 states and 8074 transitions. Second operand 7 states. [2020-10-28 12:22:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:12,584 INFO L93 Difference]: Finished difference Result 12079 states and 16410 transitions. [2020-10-28 12:22:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:22:12,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-28 12:22:12,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:12,616 INFO L225 Difference]: With dead ends: 12079 [2020-10-28 12:22:12,616 INFO L226 Difference]: Without dead ends: 5745 [2020-10-28 12:22:12,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:22:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5745 states. [2020-10-28 12:22:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5745 to 5533. [2020-10-28 12:22:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5533 states. [2020-10-28 12:22:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 6914 transitions. [2020-10-28 12:22:12,783 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 6914 transitions. Word has length 225 [2020-10-28 12:22:12,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:12,784 INFO L481 AbstractCegarLoop]: Abstraction has 5533 states and 6914 transitions. [2020-10-28 12:22:12,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:12,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 6914 transitions. [2020-10-28 12:22:12,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-28 12:22:12,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:12,789 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:12,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:22:12,789 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash 708308272, now seen corresponding path program 1 times [2020-10-28 12:22:12,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:12,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267047857] [2020-10-28 12:22:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:13,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:15,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:15,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 12:22:15,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:22:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-28 12:22:15,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:15,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:22:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-28 12:22:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:22:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:15,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:15,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:15,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:15,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:22:15,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:15,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:15,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:15,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:15,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:15,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:22:15,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:22:15,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:15,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:22:15,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:15,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:22:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:15,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:15,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:15,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:22:15,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:22:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 12:22:15,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:15,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:15,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:22:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:22:15,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267047857] [2020-10-28 12:22:15,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:15,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:22:15,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007591203] [2020-10-28 12:22:15,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:22:15,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:15,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:22:15,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:22:15,870 INFO L87 Difference]: Start difference. First operand 5533 states and 6914 transitions. Second operand 6 states. [2020-10-28 12:22:36,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:36,510 INFO L93 Difference]: Finished difference Result 19811 states and 25987 transitions. [2020-10-28 12:22:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:22:36,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-10-28 12:22:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:36,563 INFO L225 Difference]: With dead ends: 19811 [2020-10-28 12:22:36,563 INFO L226 Difference]: Without dead ends: 13487 [2020-10-28 12:22:36,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:22:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13487 states. [2020-10-28 12:22:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13487 to 13466. [2020-10-28 12:22:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13466 states. [2020-10-28 12:22:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13466 states to 13466 states and 16409 transitions. [2020-10-28 12:22:36,870 INFO L78 Accepts]: Start accepts. Automaton has 13466 states and 16409 transitions. Word has length 270 [2020-10-28 12:22:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:36,871 INFO L481 AbstractCegarLoop]: Abstraction has 13466 states and 16409 transitions. [2020-10-28 12:22:36,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:22:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 13466 states and 16409 transitions. [2020-10-28 12:22:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-28 12:22:36,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:36,877 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:22:36,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:22:36,877 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:36,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:36,878 INFO L82 PathProgramCache]: Analyzing trace with hash -502279332, now seen corresponding path program 1 times [2020-10-28 12:22:36,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:36,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540002795] [2020-10-28 12:22:36,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:37,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:39,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:39,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 12:22:39,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:22:39,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2061 [2020-10-28 12:22:39,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:39,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:39,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:22:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:22:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:39,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:39,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:39,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:39,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:39,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:22:39,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:39,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:39,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:39,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:39,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:39,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:39,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:22:39,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:22:39,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:39,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:22:39,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:39,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:22:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:39,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:39,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:22:39,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:39,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:22:39,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:39,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:22:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:22:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:22:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:22:39,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540002795] [2020-10-28 12:22:39,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:39,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:22:39,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321285535] [2020-10-28 12:22:39,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:22:39,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:39,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:22:39,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:22:39,845 INFO L87 Difference]: Start difference. First operand 13466 states and 16409 transitions. Second operand 7 states. [2020-10-28 12:22:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:22:57,626 INFO L93 Difference]: Finished difference Result 30825 states and 38971 transitions. [2020-10-28 12:22:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:22:57,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 288 [2020-10-28 12:22:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:22:57,678 INFO L225 Difference]: With dead ends: 30825 [2020-10-28 12:22:57,678 INFO L226 Difference]: Without dead ends: 18132 [2020-10-28 12:22:57,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 12:22:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18132 states. [2020-10-28 12:22:58,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18132 to 17859. [2020-10-28 12:22:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17859 states. [2020-10-28 12:22:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17859 states to 17859 states and 21880 transitions. [2020-10-28 12:22:58,077 INFO L78 Accepts]: Start accepts. Automaton has 17859 states and 21880 transitions. Word has length 288 [2020-10-28 12:22:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:22:58,078 INFO L481 AbstractCegarLoop]: Abstraction has 17859 states and 21880 transitions. [2020-10-28 12:22:58,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:22:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 17859 states and 21880 transitions. [2020-10-28 12:22:58,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-28 12:22:58,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:22:58,085 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:22:58,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:22:58,085 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:22:58,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:22:58,086 INFO L82 PathProgramCache]: Analyzing trace with hash 602581156, now seen corresponding path program 1 times [2020-10-28 12:22:58,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:22:58,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516790215] [2020-10-28 12:22:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:22:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:58,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:58,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 12:22:58,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:58,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-28 12:22:58,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:58,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:22:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-28 12:22:58,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 12:22:58,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:22:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:58,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:58,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:22:58,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:22:58,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:58,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:58,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:58,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:58,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:22:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:58,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:22:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:22:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:58,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:22:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:58,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:22:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:59,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:22:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:22:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:22:59,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:22:59,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:22:59,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:22:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:22:59,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:22:59,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:22:59,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:22:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:22:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:22:59,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:22:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-28 12:22:59,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516790215] [2020-10-28 12:22:59,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:22:59,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:22:59,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951946841] [2020-10-28 12:22:59,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:22:59,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:22:59,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:22:59,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:22:59,247 INFO L87 Difference]: Start difference. First operand 17859 states and 21880 transitions. Second operand 5 states. [2020-10-28 12:23:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:14,731 INFO L93 Difference]: Finished difference Result 49380 states and 63234 transitions. [2020-10-28 12:23:14,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:23:14,733 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-28 12:23:14,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:14,832 INFO L225 Difference]: With dead ends: 49380 [2020-10-28 12:23:14,832 INFO L226 Difference]: Without dead ends: 32294 [2020-10-28 12:23:14,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:23:14,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32294 states. [2020-10-28 12:23:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32294 to 32275. [2020-10-28 12:23:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32275 states. [2020-10-28 12:23:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32275 states to 32275 states and 40529 transitions. [2020-10-28 12:23:15,530 INFO L78 Accepts]: Start accepts. Automaton has 32275 states and 40529 transitions. Word has length 316 [2020-10-28 12:23:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:15,531 INFO L481 AbstractCegarLoop]: Abstraction has 32275 states and 40529 transitions. [2020-10-28 12:23:15,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:23:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 32275 states and 40529 transitions. [2020-10-28 12:23:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-28 12:23:15,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:15,538 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:23:15,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:23:15,538 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:15,539 INFO L82 PathProgramCache]: Analyzing trace with hash -719635714, now seen corresponding path program 1 times [2020-10-28 12:23:15,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:15,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52885127] [2020-10-28 12:23:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:16,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:16,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-28 12:23:16,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-28 12:23:16,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:16,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-28 12:23:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 12:23:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:16,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:16,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:16,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:16,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:16,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:23:16,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:16,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:16,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:16,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:16,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:16,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:23:16,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:16,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:23:16,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:16,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:16,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:16,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:16,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:23:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:16,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:16,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 12:23:16,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 12:23:16,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:16,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:16,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 12:23:16,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:23:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-28 12:23:17,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52885127] [2020-10-28 12:23:17,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:17,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:23:17,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398509363] [2020-10-28 12:23:17,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:23:17,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:17,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:23:17,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:23:17,168 INFO L87 Difference]: Start difference. First operand 32275 states and 40529 transitions. Second operand 5 states. [2020-10-28 12:23:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:23:35,993 INFO L93 Difference]: Finished difference Result 71066 states and 91941 transitions. [2020-10-28 12:23:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:23:35,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2020-10-28 12:23:35,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:23:36,113 INFO L225 Difference]: With dead ends: 71066 [2020-10-28 12:23:36,113 INFO L226 Difference]: Without dead ends: 38792 [2020-10-28 12:23:36,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:23:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38792 states. [2020-10-28 12:23:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38792 to 38718. [2020-10-28 12:23:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38718 states. [2020-10-28 12:23:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38718 states to 38718 states and 50668 transitions. [2020-10-28 12:23:37,109 INFO L78 Accepts]: Start accepts. Automaton has 38718 states and 50668 transitions. Word has length 335 [2020-10-28 12:23:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:23:37,110 INFO L481 AbstractCegarLoop]: Abstraction has 38718 states and 50668 transitions. [2020-10-28 12:23:37,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:23:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 38718 states and 50668 transitions. [2020-10-28 12:23:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-10-28 12:23:37,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:23:37,118 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:23:37,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:23:37,119 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:23:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:23:37,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1990750874, now seen corresponding path program 1 times [2020-10-28 12:23:37,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:23:37,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820654004] [2020-10-28 12:23:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:23:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:39,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:39,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-28 12:23:39,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:23:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2340 [2020-10-28 12:23:39,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:39,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:23:39,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 12:23:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:39,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:23:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:39,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:39,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:39,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:23:39,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:23:39,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:39,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:23:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:23:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:39,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:23:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:39,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:39,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:23:39,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:39,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:23:39,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:39,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:39,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:23:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:23:39,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:23:39,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:40,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:23:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:23:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:23:40,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:23:40,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:23:40,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:23:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-28 12:23:40,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:23:40,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:23:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:23:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:23:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:23:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:23:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:23:40,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820654004] [2020-10-28 12:23:40,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:23:40,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:23:40,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001583863] [2020-10-28 12:23:40,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:23:40,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:23:40,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:23:40,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:23:40,593 INFO L87 Difference]: Start difference. First operand 38718 states and 50668 transitions. Second operand 7 states. [2020-10-28 12:23:53,772 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:24:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:24:01,179 INFO L93 Difference]: Finished difference Result 82893 states and 109544 transitions. [2020-10-28 12:24:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:24:01,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 347 [2020-10-28 12:24:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:24:01,324 INFO L225 Difference]: With dead ends: 82893 [2020-10-28 12:24:01,324 INFO L226 Difference]: Without dead ends: 44948 [2020-10-28 12:24:01,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:24:01,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44948 states. [2020-10-28 12:24:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44948 to 44620. [2020-10-28 12:24:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44620 states. [2020-10-28 12:24:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44620 states to 44620 states and 58208 transitions. [2020-10-28 12:24:02,902 INFO L78 Accepts]: Start accepts. Automaton has 44620 states and 58208 transitions. Word has length 347 [2020-10-28 12:24:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:24:02,903 INFO L481 AbstractCegarLoop]: Abstraction has 44620 states and 58208 transitions. [2020-10-28 12:24:02,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:24:02,903 INFO L276 IsEmpty]: Start isEmpty. Operand 44620 states and 58208 transitions. [2020-10-28 12:24:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-28 12:24:02,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:02,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:24:02,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:24:02,919 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:02,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:02,920 INFO L82 PathProgramCache]: Analyzing trace with hash 833745350, now seen corresponding path program 1 times [2020-10-28 12:24:02,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:02,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717856255] [2020-10-28 12:24:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:04,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:08,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:08,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-28 12:24:08,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:24:08,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 12:24:08,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:08,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:24:08,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 12:24:08,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:08,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:08,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:08,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:08,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:08,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:24:08,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:08,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:24:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:08,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:24:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:08,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:24:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:08,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:08,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:24:08,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:08,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 12:24:08,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:08,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:08,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:24:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:24:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:08,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:08,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:08,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:24:08,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:24:08,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 12:24:08,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:08,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:08,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 12:24:08,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:08,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-28 12:24:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:08,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:08,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:24:08,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:08,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:24:08,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:08,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:08,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:24:08,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:24:08,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:24:08,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:24:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 266 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-28 12:24:09,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717856255] [2020-10-28 12:24:09,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:24:09,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:24:09,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773810668] [2020-10-28 12:24:09,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:24:09,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:09,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:24:09,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:24:09,013 INFO L87 Difference]: Start difference. First operand 44620 states and 58208 transitions. Second operand 7 states.