/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 22:41:59,253 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 22:41:59,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 22:41:59,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 22:41:59,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 22:41:59,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 22:41:59,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 22:41:59,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 22:41:59,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 22:41:59,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 22:41:59,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 22:41:59,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 22:41:59,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 22:41:59,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 22:41:59,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 22:41:59,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 22:41:59,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 22:41:59,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 22:41:59,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 22:41:59,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 22:41:59,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 22:41:59,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 22:41:59,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 22:41:59,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 22:41:59,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 22:41:59,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 22:41:59,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 22:41:59,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 22:41:59,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 22:41:59,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 22:41:59,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 22:41:59,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 22:41:59,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 22:41:59,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 22:41:59,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 22:41:59,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 22:41:59,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 22:41:59,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 22:41:59,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 22:41:59,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 22:41:59,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 22:41:59,322 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
[2020-09-24 22:41:59,348 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 22:41:59,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 22:41:59,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 22:41:59,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 22:41:59,350 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 22:41:59,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 22:41:59,351 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 22:41:59,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 22:41:59,351 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 22:41:59,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 22:41:59,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 22:41:59,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 22:41:59,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 22:41:59,352 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 22:41:59,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 22:41:59,353 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 22:41:59,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 22:41:59,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 22:41:59,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 22:41:59,353 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 22:41:59,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 22:41:59,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 22:41:59,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 22:41:59,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 22:41:59,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 22:41:59,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 22:41:59,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 22:41:59,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 22:41:59,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 22:41:59,356 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
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 -> SingleStatement
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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=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=HIGHLEXORDER;log-additional-information=true;
[2020-09-24 22:41:59,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 22:41:59,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 22:41:59,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 22:41:59,890 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 22:41:59,890 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 22:41:59,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec.c
[2020-09-24 22:41:59,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9679c4b98/2200a463eeec416bab9c52076677a944/FLAG8ca736f45
[2020-09-24 22:42:00,608 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 22:42:00,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec.c
[2020-09-24 22:42:00,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9679c4b98/2200a463eeec416bab9c52076677a944/FLAG8ca736f45
[2020-09-24 22:42:00,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9679c4b98/2200a463eeec416bab9c52076677a944
[2020-09-24 22:42:00,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 22:42:00,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 22:42:00,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 22:42:00,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 22:42:00,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 22:42:00,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:00" (1/1) ...
[2020-09-24 22:42:00,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4158ef91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:00, skipping insertion in model container
[2020-09-24 22:42:00,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:00" (1/1) ...
[2020-09-24 22:42:00,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 22:42:01,010 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 22:42:01,227 WARN L1484 CHandler]: Possible shadowing of function min
[2020-09-24 22:42:01,229 WARN L1484 CHandler]: Possible shadowing of function min
[2020-09-24 22:42:01,254 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 22:42:01,277 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 22:42:01,387 WARN L1484 CHandler]: Possible shadowing of function min
[2020-09-24 22:42:01,392 WARN L1484 CHandler]: Possible shadowing of function min
[2020-09-24 22:42:01,414 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 22:42:01,439 INFO L208 MainTranslator]: Completed translation
[2020-09-24 22:42:01,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01 WrapperNode
[2020-09-24 22:42:01,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 22:42:01,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 22:42:01,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 22:42:01,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 22:42:01,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ...
[2020-09-24 22:42:01,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ...
[2020-09-24 22:42:01,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ...
[2020-09-24 22:42:01,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ...
[2020-09-24 22:42:01,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ...
[2020-09-24 22:42:01,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ...
[2020-09-24 22:42:01,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ...
[2020-09-24 22:42:01,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 22:42:01,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 22:42:01,514 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 22:42:01,514 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 22:42:01,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (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
[2020-09-24 22:42:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 22:42:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 22:42:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not
[2020-09-24 22:42:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 22:42:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree
[2020-09-24 22:42:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure min
[2020-09-24 22:42:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del
[2020-09-24 22:42:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder
[2020-09-24 22:42:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure size
[2020-09-24 22:42:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure task
[2020-09-24 22:42:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 22:42:01,603 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit
[2020-09-24 22:42:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2020-09-24 22:42:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 22:42:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2020-09-24 22:42:01,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 22:42:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 22:42:01,604 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not
[2020-09-24 22:42:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 22:42:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 22:42:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree
[2020-09-24 22:42:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 22:42:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 22:42:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-24 22:42:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure min
[2020-09-24 22:42:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 22:42:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-24 22:42:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del
[2020-09-24 22:42:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 22:42:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder
[2020-09-24 22:42:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure size
[2020-09-24 22:42:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure task
[2020-09-24 22:42:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 22:42:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit
[2020-09-24 22:42:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 22:42:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 22:42:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 22:42:02,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 22:42:02,246 INFO L295 CfgBuilder]: Removed 2 assume(true) statements.
[2020-09-24 22:42:02,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:02 BoogieIcfgContainer
[2020-09-24 22:42:02,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 22:42:02,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 22:42:02,256 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 22:42:02,260 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 22:42:02,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:42:00" (1/3) ...
[2020-09-24 22:42:02,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ba434c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:02, skipping insertion in model container
[2020-09-24 22:42:02,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (2/3) ...
[2020-09-24 22:42:02,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ba434c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:02, skipping insertion in model container
[2020-09-24 22:42:02,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:02" (3/3) ...
[2020-09-24 22:42:02,265 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c
[2020-09-24 22:42:02,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 22:42:02,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 22:42:02,311 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 22:42:02,342 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 22:42:02,342 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 22:42:02,342 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 22:42:02,343 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 22:42:02,343 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 22:42:02,343 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 22:42:02,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 22:42:02,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 22:42:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states.
[2020-09-24 22:42:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-09-24 22:42:02,385 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 22:42:02,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 22:42:02,387 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 22:42:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 22:42:02,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2147081424, now seen corresponding path program 1 times
[2020-09-24 22:42:02,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 22:42:02,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718838629]
[2020-09-24 22:42:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 22:42:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:03,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:03,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83
[2020-09-24 22:42:03,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:03,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679
[2020-09-24 22:42:03,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 22:42:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-09-24 22:42:03,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-24 22:42:03,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 22:42:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 22:42:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:03,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:03,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:03,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:03,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-24 22:42:03,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:03,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:03,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 22:42:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:03,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:03,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:03,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-09-24 22:42:03,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-24 22:42:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:03,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:03,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:03,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 22:42:03,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:03,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 22:42:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:03,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:03,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:03,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:03,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:03,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-09-24 22:42:03,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 22:42:03,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:03,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 22:42:03,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:03,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-09-24 22:42:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:03,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:03,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 22:42:03,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:03,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-24 22:42:03,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:03,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:03,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 22:42:03,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 22:42:03,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7
[2020-09-24 22:42:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-24 22:42:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:03,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:03,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 22:42:03,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:03,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 22:42:03,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:03,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6
[2020-09-24 22:42:03,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:03,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:03,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-09-24 22:42:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:03,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:03,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:03,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 22:42:03,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:03,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 22:42:03,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-24 22:42:03,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:03,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:03,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 22:42:03,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718838629]
[2020-09-24 22:42:03,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 22:42:03,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-24 22:42:03,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867591088]
[2020-09-24 22:42:03,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 22:42:03,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 22:42:03,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 22:42:03,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-09-24 22:42:03,808 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 11 states.
[2020-09-24 22:42:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 22:42:05,074 INFO L93 Difference]: Finished difference Result 333 states and 391 transitions.
[2020-09-24 22:42:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-09-24 22:42:05,078 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60
[2020-09-24 22:42:05,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 22:42:05,109 INFO L225 Difference]: With dead ends: 333
[2020-09-24 22:42:05,109 INFO L226 Difference]: Without dead ends: 193
[2020-09-24 22:42:05,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306
[2020-09-24 22:42:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states.
[2020-09-24 22:42:05,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180.
[2020-09-24 22:42:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states.
[2020-09-24 22:42:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions.
[2020-09-24 22:42:05,222 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 60
[2020-09-24 22:42:05,222 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 22:42:05,222 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions.
[2020-09-24 22:42:05,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 22:42:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions.
[2020-09-24 22:42:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2020-09-24 22:42:05,228 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 22:42:05,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 22:42:05,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 22:42:05,229 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 22:42:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 22:42:05,230 INFO L82 PathProgramCache]: Analyzing trace with hash 394479658, now seen corresponding path program 1 times
[2020-09-24 22:42:05,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 22:42:05,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422624173]
[2020-09-24 22:42:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 22:42:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:05,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:09,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:09,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107
[2020-09-24 22:42:09,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 22:42:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4354
[2020-09-24 22:42:09,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:09,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 22:42:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39
[2020-09-24 22:42:09,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-09-24 22:42:09,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-24 22:42:09,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 22:42:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:09,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:09,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:09,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:09,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:09,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 22:42:09,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:09,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:09,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:09,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 22:42:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:09,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:09,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:09,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:09,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-24 22:42:09,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-24 22:42:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:09,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:09,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:09,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:09,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 22:42:09,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:09,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:09,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9
[2020-09-24 22:42:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 22:42:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:09,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:09,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:09,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-24 22:42:09,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64
[2020-09-24 22:42:09,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-09-24 22:42:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:09,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 22:42:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:09,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:09,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:09,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 22:42:09,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:09,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:09,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 22:42:09,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:09,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-24 22:42:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:10,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:10,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 22:42:10,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:10,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 22:42:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-09-24 22:42:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:10,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:10,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 22:42:10,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:10,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-24 22:42:10,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:10,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 22:42:10,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:10,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2020-09-24 22:42:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:10,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:10,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 22:42:10,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:10,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 22:42:10,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:10,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 22:42:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:10,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-09-24 22:42:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:10,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:10,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 22:42:10,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:10,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-09-24 22:42:10,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 22:42:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 22:42:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-09-24 22:42:10,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422624173]
[2020-09-24 22:42:10,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 22:42:10,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-24 22:42:10,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081344182]
[2020-09-24 22:42:10,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-24 22:42:10,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 22:42:10,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-24 22:42:10,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2020-09-24 22:42:10,272 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 11 states.
[2020-09-24 22:42:11,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 22:42:11,688 INFO L93 Difference]: Finished difference Result 307 states and 349 transitions.
[2020-09-24 22:42:11,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-24 22:42:11,689 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80
[2020-09-24 22:42:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 22:42:11,692 INFO L225 Difference]: With dead ends: 307
[2020-09-24 22:42:11,692 INFO L226 Difference]: Without dead ends: 198
[2020-09-24 22:42:11,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342
[2020-09-24 22:42:11,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states.
[2020-09-24 22:42:11,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187.
[2020-09-24 22:42:11,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states.
[2020-09-24 22:42:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 212 transitions.
[2020-09-24 22:42:11,734 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 212 transitions. Word has length 80
[2020-09-24 22:42:11,734 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 22:42:11,734 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 212 transitions.
[2020-09-24 22:42:11,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-24 22:42:11,735 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 212 transitions.
[2020-09-24 22:42:11,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2020-09-24 22:42:11,748 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 22:42:11,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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]
[2020-09-24 22:42:11,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 22:42:11,749 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 22:42:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 22:42:11,749 INFO L82 PathProgramCache]: Analyzing trace with hash -252425215, now seen corresponding path program 1 times
[2020-09-24 22:42:11,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 22:42:11,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642212627]
[2020-09-24 22:42:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 22:42:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:12,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:16,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:16,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143
[2020-09-24 22:42:16,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-24 22:42:16,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006
[2020-09-24 22:42:16,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-24 22:42:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27
[2020-09-24 22:42:16,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68
[2020-09-24 22:42:16,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:16,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 22:42:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:16,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:16,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:16,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 22:42:16,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:16,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 22:42:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:16,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:16,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:16,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:16,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:16,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 22:42:16,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:16,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:16,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 22:42:16,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-24 22:42:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:16,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:16,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:16,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:16,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-09-24 22:42:16,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:16,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-24 22:42:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:16,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-24 22:42:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:17,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:17,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-24 22:42:17,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 22:42:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72
[2020-09-24 22:42:17,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 22:42:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 22:42:17,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:17,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 22:42:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:17,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:17,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:17,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:17,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 22:42:17,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:17,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 22:42:17,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:17,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-24 22:42:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:17,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:17,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:17,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-24 22:42:17,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 22:42:17,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:17,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-09-24 22:42:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:17,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:17,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 22:42:17,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:17,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 22:42:17,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:17,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:17,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 22:42:17,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:17,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2020-09-24 22:42:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:17,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:17,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 22:42:17,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:17,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-24 22:42:17,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 22:42:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:17,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-09-24 22:42:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:17,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:17,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:17,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-09-24 22:42:17,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:17,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103
[2020-09-24 22:42:17,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 22:42:17,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45
[2020-09-24 22:42:17,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:17,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-24 22:42:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:17,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:17,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 22:42:17,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:17,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 22:42:17,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:17,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 22:42:17,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-09-24 22:42:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:17,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 22:42:17,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 22:42:17,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 22:42:17,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2020-09-24 22:42:17,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642212627]
[2020-09-24 22:42:17,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 22:42:17,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2020-09-24 22:42:17,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033631795]
[2020-09-24 22:42:17,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-09-24 22:42:17,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 22:42:17,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-09-24 22:42:17,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2020-09-24 22:42:17,388 INFO L87 Difference]: Start difference. First operand 187 states and 212 transitions. Second operand 13 states.
[2020-09-24 22:42:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 22:42:18,662 INFO L93 Difference]: Finished difference Result 333 states and 379 transitions.
[2020-09-24 22:42:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-09-24 22:42:18,663 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112
[2020-09-24 22:42:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 22:42:18,666 INFO L225 Difference]: With dead ends: 333
[2020-09-24 22:42:18,666 INFO L226 Difference]: Without dead ends: 200
[2020-09-24 22:42:18,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506
[2020-09-24 22:42:18,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states.
[2020-09-24 22:42:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189.
[2020-09-24 22:42:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states.
[2020-09-24 22:42:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 215 transitions.
[2020-09-24 22:42:18,712 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 215 transitions. Word has length 112
[2020-09-24 22:42:18,712 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 22:42:18,712 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 215 transitions.
[2020-09-24 22:42:18,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-09-24 22:42:18,713 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 215 transitions.
[2020-09-24 22:42:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139
[2020-09-24 22:42:18,716 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 22:42:18,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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]
[2020-09-24 22:42:18,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 22:42:18,717 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 22:42:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 22:42:18,717 INFO L82 PathProgramCache]: Analyzing trace with hash 525009593, now seen corresponding path program 1 times
[2020-09-24 22:42:18,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 22:42:18,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169414924]
[2020-09-24 22:42:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 22:42:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:18,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:23,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:23,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173
[2020-09-24 22:42:23,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 22:42:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000
[2020-09-24 22:42:23,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 22:42:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-24 22:42:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106
[2020-09-24 22:42:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 22:42:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:23,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:23,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:23,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:23,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 22:42:23,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:42:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:23,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:42:23,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 22:42:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:23,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:23,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:23,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:23,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-09-24 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 22:42:23,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-24 22:42:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:23,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-09-24 22:42:24,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 22:42:24,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80
[2020-09-24 22:42:24,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 22:42:24,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37
[2020-09-24 22:42:24,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:24,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-09-24 22:42:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:24,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-24 22:42:24,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:24,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 22:42:24,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:42:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-09-24 22:42:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:24,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-24 22:42:24,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:24,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 22:42:24,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:24,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51
[2020-09-24 22:42:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-24 22:42:24,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 22:42:24,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58
[2020-09-24 22:42:24,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 22:42:24,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-24 22:42:24,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:24,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-24 22:42:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:24,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 22:42:24,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:24,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 22:42:24,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:24,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-24 22:42:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-24 22:42:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 22:42:24,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:24,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:24,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 22:42:24,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:24,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80
[2020-09-24 22:42:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-24 22:42:24,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-24 22:42:24,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:24,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:24,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-24 22:42:24,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:24,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86
[2020-09-24 22:42:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-24 22:42:24,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 22:42:24,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 22:42:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:24,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91
[2020-09-24 22:42:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-09-24 22:42:24,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102
[2020-09-24 22:42:24,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-24 22:42:24,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-24 22:42:24,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45
[2020-09-24 22:42:24,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:24,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-24 22:42:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 22:42:24,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-24 22:42:24,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 22:42:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9
[2020-09-24 22:42:24,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-09-24 22:42:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:42:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:42:24,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:42:24,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 22:42:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:42:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-24 22:42:24,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:42:24,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 22:42:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:42:24,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-24 22:42:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:42:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2020-09-24 22:42:24,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169414924]
[2020-09-24 22:42:24,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 22:42:24,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2020-09-24 22:42:24,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916156506]
[2020-09-24 22:42:24,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states
[2020-09-24 22:42:24,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 22:42:24,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2020-09-24 22:42:24,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240
[2020-09-24 22:42:24,712 INFO L87 Difference]: Start difference. First operand 189 states and 215 transitions. Second operand 16 states.
[2020-09-24 22:42:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 22:42:26,702 INFO L93 Difference]: Finished difference Result 335 states and 381 transitions.
[2020-09-24 22:42:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2020-09-24 22:42:26,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 138
[2020-09-24 22:42:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 22:42:26,705 INFO L225 Difference]: With dead ends: 335
[2020-09-24 22:42:26,705 INFO L226 Difference]: Without dead ends: 199
[2020-09-24 22:42:26,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756
[2020-09-24 22:42:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states.
[2020-09-24 22:42:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191.
[2020-09-24 22:42:26,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states.
[2020-09-24 22:42:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions.
[2020-09-24 22:42:26,722 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 138
[2020-09-24 22:42:26,722 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 22:42:26,723 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions.
[2020-09-24 22:42:26,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2020-09-24 22:42:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions.
[2020-09-24 22:42:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2020-09-24 22:42:26,725 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 22:42:26,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 22:42:26,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 22:42:26,726 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 22:42:26,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 22:42:26,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1422485650, now seen corresponding path program 1 times
[2020-09-24 22:42:26,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 22:42:26,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328822256]
[2020-09-24 22:42:26,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 22:42:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 22:42:26,772 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 22:42:26,773 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 22:42:26,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 22:42:26,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:42:26 BoogieIcfgContainer
[2020-09-24 22:42:26,806 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 22:42:26,809 INFO L168 Benchmark]: Toolchain (without parser) took 25852.36 ms. Allocated memory was 140.0 MB in the beginning and 411.6 MB in the end (delta: 271.6 MB). Free memory was 102.1 MB in the beginning and 101.7 MB in the end (delta: 423.6 kB). Peak memory consumption was 272.0 MB. Max. memory is 7.1 GB.
[2020-09-24 22:42:26,810 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
[2020-09-24 22:42:26,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.97 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 178.4 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB.
[2020-09-24 22:42:26,812 INFO L168 Benchmark]: Boogie Preprocessor took 72.72 ms. Allocated memory is still 202.9 MB. Free memory was 178.4 MB in the beginning and 176.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB.
[2020-09-24 22:42:26,813 INFO L168 Benchmark]: RCFGBuilder took 740.50 ms. Allocated memory is still 202.9 MB. Free memory was 176.5 MB in the beginning and 134.1 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB.
[2020-09-24 22:42:26,814 INFO L168 Benchmark]: TraceAbstraction took 24550.08 ms. Allocated memory was 202.9 MB in the beginning and 411.6 MB in the end (delta: 208.7 MB). Free memory was 134.1 MB in the beginning and 101.7 MB in the end (delta: 32.4 MB). Peak memory consumption was 241.1 MB. Max. memory is 7.1 GB.
[2020-09-24 22:42:26,817 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 479.97 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 178.4 MB in the end (delta: -76.7 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 72.72 ms. Allocated memory is still 202.9 MB. Free memory was 178.4 MB in the beginning and 176.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 740.50 ms. Allocated memory is still 202.9 MB. Free memory was 176.5 MB in the beginning and 134.1 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 24550.08 ms. Allocated memory was 202.9 MB in the beginning and 411.6 MB in the end (delta: 208.7 MB). Free memory was 134.1 MB in the beginning and 101.7 MB in the end (delta: 32.4 MB). Peak memory consumption was 241.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L100] CALL, EXPR nondet_tree()
[L23] COND FALSE !(__VERIFIER_nondet_bool())
[L26] struct node *n = (struct node *)malloc(sizeof(struct node));
[L27] n->data = __VERIFIER_nondet_int()
[L28] CALL, EXPR nondet_tree()
[L23] COND TRUE __VERIFIER_nondet_bool()
[L24] return 0;
[L28] RET, EXPR nondet_tree()
[L28] n->left = nondet_tree()
[L29] CALL, EXPR nondet_tree()
[L23] COND TRUE __VERIFIER_nondet_bool()
[L24] return 0;
[L29] RET, EXPR nondet_tree()
[L29] n->right = nondet_tree()
[L30] return n;
[L100] RET, EXPR nondet_tree()
[L100] CALL task(nondet_tree())
[L76] CALL, EXPR min(t)
[L35] COND FALSE !(!n)
[L38] EXPR n->data
[L38] int a = n->data;
[L39] EXPR n->left
[L39] CALL, EXPR min(n->left)
[L35] COND TRUE !n
[L36] return 2147483647;
[L39] RET, EXPR min(n->left)
[L39] int b = min(n->left);
[L40] EXPR n->right
[L40] CALL, EXPR min(n->right)
[L35] COND TRUE !n
[L36] return 2147483647;
[L40] RET, EXPR min(n->right)
[L40] int c = min(n->right);
[L41] COND TRUE b <= a && b <= c
[L41] return b;
[L76] RET, EXPR min(t)
[L76] int a = min(t);
[L77] int b;
[L79] CALL, EXPR size(t)
[L71] COND FALSE !(!t)
[L72] EXPR t->left
[L72] CALL, EXPR size(t->left)
[L71] COND TRUE !t
[L71] return 0;
[L72] RET, EXPR size(t->left)
[L72] EXPR t->right
[L72] CALL, EXPR size(t->right)
[L71] COND TRUE !t
[L71] return 0;
[L72] RET, EXPR size(t->right)
[L72] return size(t->left) + size(t->right) + 1;
[L79] RET, EXPR size(t)
[L79] int n = size(t);
[L80] CALL assume_cycle_if_not(n != 0)
[L9] COND FALSE !(!cond)
[L80] RET assume_cycle_if_not(n != 0)
[L81] EXPR, FCALL calloc(n, sizeof(int))
[L81] int *x = calloc(n, sizeof(int));
[L82] CALL tree_inorder(t, x, n)
[L60] COND FALSE !(!t)
[L63] EXPR t->left
[L63] CALL, EXPR tree_inorder(t->left, a, i)
[L60] COND TRUE !t
[L61] return i;
[L63] RET, EXPR tree_inorder(t->left, a, i)
[L63] i = tree_inorder(t->left, a, i)
[L64] EXPR i++
[L64] EXPR t->data
[L64] a[i++] = t->data
[L65] EXPR t->right
[L65] CALL, EXPR tree_inorder(t->right, a, i)
[L60] COND TRUE !t
[L61] return i;
[L65] RET, EXPR tree_inorder(t->right, a, i)
[L65] i = tree_inorder(t->right, a, i)
[L66] return i;
[L82] RET tree_inorder(t, x, n)
[L83] EXPR x[0]
[L83] CALL __VERIFIER_assert(a == x[0])
[L14] COND TRUE !cond
[L14] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 12 procedures, 190 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.4s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 676 SDtfs, 1301 SDslu, 2149 SDs, 0 SdLazy, 3795 SolverSat, 478 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.5s InterpolantComputationTime, 549 NumberOfCodeBlocks, 549 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 281432 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 70/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...