/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_incorrect.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 13:25:28,311 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 13:25:28,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 13:25:28,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 13:25:28,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 13:25:28,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 13:25:28,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 13:25:28,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 13:25:28,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 13:25:28,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 13:25:28,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 13:25:28,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 13:25:28,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 13:25:28,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 13:25:28,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 13:25:28,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 13:25:28,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 13:25:28,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 13:25:28,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 13:25:28,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 13:25:28,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 13:25:28,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 13:25:28,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 13:25:28,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 13:25:28,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 13:25:28,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 13:25:28,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 13:25:28,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 13:25:28,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 13:25:28,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 13:25:28,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 13:25:28,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 13:25:28,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 13:25:28,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 13:25:28,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 13:25:28,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 13:25:28,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 13:25:28,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 13:25:28,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 13:25:28,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 13:25:28,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 13:25:28,435 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
[2020-09-25 13:25:28,487 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 13:25:28,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 13:25:28,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 13:25:28,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 13:25:28,490 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 13:25:28,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 13:25:28,491 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 13:25:28,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 13:25:28,491 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 13:25:28,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 13:25:28,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 13:25:28,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 13:25:28,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 13:25:28,494 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 13:25:28,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 13:25:28,494 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 13:25:28,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 13:25:28,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 13:25:28,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 13:25:28,495 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 13:25:28,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 13:25:28,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 13:25:28,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 13:25:28,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 13:25:28,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 13:25:28,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 13:25:28,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 13:25:28,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 13:25:28,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 13:25:28,497 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
[2020-09-25 13:25:28,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 13:25:29,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 13:25:29,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 13:25:29,027 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 13:25:29,028 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 13:25:29,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c
[2020-09-25 13:25:29,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/140aa4fda/2eb0b8ec5edb46919638b4c2def5cfb4/FLAG396aa6ede
[2020-09-25 13:25:29,746 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 13:25:29,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c
[2020-09-25 13:25:29,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/140aa4fda/2eb0b8ec5edb46919638b4c2def5cfb4/FLAG396aa6ede
[2020-09-25 13:25:30,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/140aa4fda/2eb0b8ec5edb46919638b4c2def5cfb4
[2020-09-25 13:25:30,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 13:25:30,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 13:25:30,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 13:25:30,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 13:25:30,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 13:25:30,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ed3e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30, skipping insertion in model container
[2020-09-25 13:25:30,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 13:25:30,128 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 13:25:30,362 WARN L1484 CHandler]: Possible shadowing of function min
[2020-09-25 13:25:30,365 WARN L1484 CHandler]: Possible shadowing of function min
[2020-09-25 13:25:30,384 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 13:25:30,403 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 13:25:30,508 WARN L1484 CHandler]: Possible shadowing of function min
[2020-09-25 13:25:30,510 WARN L1484 CHandler]: Possible shadowing of function min
[2020-09-25 13:25:30,528 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 13:25:30,559 INFO L208 MainTranslator]: Completed translation
[2020-09-25 13:25:30,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30 WrapperNode
[2020-09-25 13:25:30,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 13:25:30,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 13:25:30,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 13:25:30,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 13:25:30,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (1/1) ...
[2020-09-25 13:25:30,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 13:25:30,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 13:25:30,624 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 13:25:30,625 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 13:25:30,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (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
[2020-09-25 13:25:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 13:25:30,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 13:25:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 13:25:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 13:25:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree
[2020-09-25 13:25:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure min
[2020-09-25 13:25:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del
[2020-09-25 13:25:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder
[2020-09-25 13:25:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure size
[2020-09-25 13:25:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure task
[2020-09-25 13:25:30,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 13:25:30,712 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit
[2020-09-25 13:25:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2020-09-25 13:25:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-25 13:25:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2020-09-25 13:25:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-25 13:25:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-25 13:25:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 13:25:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 13:25:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 13:25:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 13:25:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree
[2020-09-25 13:25:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-25 13:25:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 13:25:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-09-25 13:25:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure min
[2020-09-25 13:25:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-09-25 13:25:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del
[2020-09-25 13:25:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 13:25:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 13:25:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder
[2020-09-25 13:25:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure size
[2020-09-25 13:25:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure task
[2020-09-25 13:25:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 13:25:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit
[2020-09-25 13:25:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 13:25:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 13:25:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 13:25:31,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 13:25:31,358 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 13:25:31,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:25:31 BoogieIcfgContainer
[2020-09-25 13:25:31,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 13:25:31,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 13:25:31,367 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 13:25:31,371 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 13:25:31,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:25:30" (1/3) ...
[2020-09-25 13:25:31,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435ba444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:25:31, skipping insertion in model container
[2020-09-25 13:25:31,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:30" (2/3) ...
[2020-09-25 13:25:31,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435ba444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:25:31, skipping insertion in model container
[2020-09-25 13:25:31,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:25:31" (3/3) ...
[2020-09-25 13:25:31,376 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c
[2020-09-25 13:25:31,388 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 13:25:31,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 13:25:31,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 13:25:31,451 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 13:25:31,451 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 13:25:31,451 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 13:25:31,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 13:25:31,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 13:25:31,451 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 13:25:31,452 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 13:25:31,452 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 13:25:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states.
[2020-09-25 13:25:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-09-25 13:25:31,493 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 13:25:31,494 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]
[2020-09-25 13:25:31,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:25:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:25:31,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times
[2020-09-25 13:25:31,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:25:31,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858007697]
[2020-09-25 13:25:31,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:25:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:32,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:32,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83
[2020-09-25 13:25:32,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:32,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 650
[2020-09-25 13:25:32,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:32,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:32,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:25:32,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-09-25 13:25:32,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-09-25 13:25:32,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 13:25:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:25:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:32,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:32,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:32,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:32,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:32,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 13:25:32,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:32,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:32,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:32,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:32,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:32,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 13:25:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:32,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:32,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:32,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:32,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-09-25 13:25:32,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:32,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-25 13:25:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:32,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:32,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:32,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:25:32,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:32,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-25 13:25:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:32,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:32,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-25 13:25:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:32,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 13:25:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:32,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 13:25:32,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:32,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34
[2020-09-25 13:25:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:32,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:32,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 13:25:32,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-09-25 13:25:32,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:32,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 13:25:32,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-25 13:25:32,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 13:25:32,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40
[2020-09-25 13:25:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:32,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:32,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-25 13:25:32,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:32,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 13:25:32,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:32,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6
[2020-09-25 13:25:32,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:32,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45
[2020-09-25 13:25:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:32,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:32,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:25:32,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:32,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 13:25:32,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:32,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:32,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-09-25 13:25:32,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:32,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 13:25:32,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858007697]
[2020-09-25 13:25:32,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 13:25:32,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-09-25 13:25:32,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708607737]
[2020-09-25 13:25:32,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 13:25:32,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:25:32,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 13:25:32,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-09-25 13:25:32,923 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 11 states.
[2020-09-25 13:25:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:25:34,184 INFO L93 Difference]: Finished difference Result 324 states and 379 transitions.
[2020-09-25 13:25:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-09-25 13:25:34,186 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60
[2020-09-25 13:25:34,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:25:34,217 INFO L225 Difference]: With dead ends: 324
[2020-09-25 13:25:34,217 INFO L226 Difference]: Without dead ends: 188
[2020-09-25 13:25:34,229 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
[2020-09-25 13:25:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2020-09-25 13:25:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175.
[2020-09-25 13:25:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states.
[2020-09-25 13:25:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions.
[2020-09-25 13:25:34,310 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60
[2020-09-25 13:25:34,311 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:25:34,311 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions.
[2020-09-25 13:25:34,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 13:25:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions.
[2020-09-25 13:25:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2020-09-25 13:25:34,318 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 13:25:34,319 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]
[2020-09-25 13:25:34,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 13:25:34,319 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:25:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:25:34,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times
[2020-09-25 13:25:34,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:25:34,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991616303]
[2020-09-25 13:25:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:25:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:34,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:34,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:34,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:38,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:38,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107
[2020-09-25 13:25:38,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 13:25:38,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4550
[2020-09-25 13:25:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:38,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:25:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39
[2020-09-25 13:25:38,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-09-25 13:25:38,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:39,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:25:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 13:25:39,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:39,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:39,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 13:25:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:39,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 13:25:39,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:39,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:39,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-25 13:25:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:39,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:25:39,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:39,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:39,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:39,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-25 13:25:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 13:25:39,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62
[2020-09-25 13:25:39,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 13:25:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:39,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-09-25 13:25:39,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-25 13:25:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:39,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 13:25:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 13:25:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:39,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-25 13:25:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:39,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 13:25:39,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 13:25:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:39,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-09-25 13:25:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 13:25:39,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 13:25:39,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:39,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 13:25:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2020-09-25 13:25:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-25 13:25:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 13:25:39,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 13:25:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:39,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-09-25 13:25:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:39,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:39,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:39,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:25:39,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37
[2020-09-25 13:25:39,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:39,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:39,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 13:25:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-25 13:25:39,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 13:25:39,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2020-09-25 13:25:39,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991616303]
[2020-09-25 13:25:39,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:25:39,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 13:25:39,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71994960]
[2020-09-25 13:25:39,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 13:25:39,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:25:39,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 13:25:39,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2020-09-25 13:25:39,453 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 11 states.
[2020-09-25 13:25:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:25:40,508 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions.
[2020-09-25 13:25:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 13:25:40,509 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80
[2020-09-25 13:25:40,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:25:40,513 INFO L225 Difference]: With dead ends: 299
[2020-09-25 13:25:40,513 INFO L226 Difference]: Without dead ends: 190
[2020-09-25 13:25:40,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342
[2020-09-25 13:25:40,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states.
[2020-09-25 13:25:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179.
[2020-09-25 13:25:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states.
[2020-09-25 13:25:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions.
[2020-09-25 13:25:40,539 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 80
[2020-09-25 13:25:40,539 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:25:40,539 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions.
[2020-09-25 13:25:40,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 13:25:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions.
[2020-09-25 13:25:40,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2020-09-25 13:25:40,543 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 13:25:40,544 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]
[2020-09-25 13:25:40,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 13:25:40,544 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:25:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:25:40,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1483717926, now seen corresponding path program 1 times
[2020-09-25 13:25:40,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:25:40,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553087292]
[2020-09-25 13:25:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:25:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:40,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143
[2020-09-25 13:25:45,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-09-25 13:25:45,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003
[2020-09-25 13:25:45,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-09-25 13:25:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27
[2020-09-25 13:25:45,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68
[2020-09-25 13:25:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-25 13:25:45,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:25:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:45,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:45,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 13:25:45,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:45,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:45,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 13:25:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:45,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:45,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-09-25 13:25:45,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:45,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:45,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:45,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-25 13:25:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:45,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24
[2020-09-25 13:25:45,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 13:25:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:45,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8
[2020-09-25 13:25:45,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2020-09-25 13:25:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 13:25:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 13:25:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77
[2020-09-25 13:25:45,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:45,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-25 13:25:45,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:45,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-25 13:25:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:45,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 13:25:45,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:45,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:45,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:45,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-25 13:25:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:45,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:45,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 13:25:45,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 22
[2020-09-25 13:25:45,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-09-25 13:25:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 13:25:45,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:45,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 13:25:45,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:45,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 13:25:45,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:45,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2020-09-25 13:25:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:45,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:45,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-25 13:25:45,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 13:25:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:45,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 13:25:45,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:45,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2020-09-25 13:25:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:45,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:46,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-09-25 13:25:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100
[2020-09-25 13:25:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:46,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 13:25:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-25 13:25:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45
[2020-09-25 13:25:46,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:46,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 13:25:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:46,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:46,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:25:46,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 13:25:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:46,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:46,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 13:25:46,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-09-25 13:25:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:46,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:25:46,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:25:46,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:46,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:46,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 13:25:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2020-09-25 13:25:46,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553087292]
[2020-09-25 13:25:46,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:25:46,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 13:25:46,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588743087]
[2020-09-25 13:25:46,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 13:25:46,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:25:46,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 13:25:46,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110
[2020-09-25 13:25:46,209 INFO L87 Difference]: Start difference. First operand 179 states and 202 transitions. Second operand 11 states.
[2020-09-25 13:25:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:25:47,686 INFO L93 Difference]: Finished difference Result 318 states and 362 transitions.
[2020-09-25 13:25:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 13:25:47,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112
[2020-09-25 13:25:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:25:47,695 INFO L225 Difference]: With dead ends: 318
[2020-09-25 13:25:47,695 INFO L226 Difference]: Without dead ends: 192
[2020-09-25 13:25:47,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342
[2020-09-25 13:25:47,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states.
[2020-09-25 13:25:47,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 181.
[2020-09-25 13:25:47,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states.
[2020-09-25 13:25:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 205 transitions.
[2020-09-25 13:25:47,753 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 205 transitions. Word has length 112
[2020-09-25 13:25:47,754 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:25:47,754 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 205 transitions.
[2020-09-25 13:25:47,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 13:25:47,754 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 205 transitions.
[2020-09-25 13:25:47,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2020-09-25 13:25:47,760 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 13:25:47,760 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]
[2020-09-25 13:25:47,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 13:25:47,761 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:25:47,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:25:47,763 INFO L82 PathProgramCache]: Analyzing trace with hash -325484028, now seen corresponding path program 1 times
[2020-09-25 13:25:47,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:25:47,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736285477]
[2020-09-25 13:25:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:25:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:47,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:47,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:48,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:52,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:52,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170
[2020-09-25 13:25:52,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 13:25:52,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013
[2020-09-25 13:25:52,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:52,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:52,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 13:25:52,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-09-25 13:25:52,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103
[2020-09-25 13:25:52,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 13:25:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:52,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:52,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:52,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:52,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:52,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-09-25 13:25:52,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:52,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:52,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:52,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-25 13:25:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:52,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:52,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:52,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:52,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-09-25 13:25:52,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:52,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 13:25:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:52,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 13:25:52,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-09-25 13:25:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-09-25 13:25:53,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 13:25:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96
[2020-09-25 13:25:53,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34
[2020-09-25 13:25:53,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:53,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-25 13:25:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:53,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:25:53,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:53,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:53,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 13:25:53,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14
[2020-09-25 13:25:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:53,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-25 13:25:53,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-09-25 13:25:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35
[2020-09-25 13:25:53,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 13:25:53,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88
[2020-09-25 13:25:53,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:53,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31
[2020-09-25 13:25:53,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3
[2020-09-25 13:25:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:53,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 13:25:53,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:53,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11
[2020-09-25 13:25:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 13:25:53,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-09-25 13:25:53,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 13:25:53,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 13:25:53,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77
[2020-09-25 13:25:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 13:25:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 13:25:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 13:25:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2020-09-25 13:25:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-09-25 13:25:53,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 13:25:53,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 13:25:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88
[2020-09-25 13:25:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-09-25 13:25:53,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104
[2020-09-25 13:25:53,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-09-25 13:25:53,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3
[2020-09-25 13:25:53,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45
[2020-09-25 13:25:53,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-09-25 13:25:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:25:53,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:25:53,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 13:25:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24
[2020-09-25 13:25:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 13:25:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 13:25:53,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 13:25:53,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-25 13:25:53,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 13:25:53,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 13:25:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 13:25:53,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4
[2020-09-25 13:25:53,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 13:25:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 13:25:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 13:25:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 13:25:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2020-09-25 13:25:53,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736285477]
[2020-09-25 13:25:53,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 13:25:53,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2020-09-25 13:25:53,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825106451]
[2020-09-25 13:25:53,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-25 13:25:53,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 13:25:53,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-25 13:25:53,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2020-09-25 13:25:53,607 INFO L87 Difference]: Start difference. First operand 181 states and 205 transitions. Second operand 12 states.
[2020-09-25 13:25:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 13:25:54,937 INFO L93 Difference]: Finished difference Result 320 states and 364 transitions.
[2020-09-25 13:25:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2020-09-25 13:25:54,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 135
[2020-09-25 13:25:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 13:25:54,943 INFO L225 Difference]: With dead ends: 320
[2020-09-25 13:25:54,943 INFO L226 Difference]: Without dead ends: 191
[2020-09-25 13:25:54,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462
[2020-09-25 13:25:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states.
[2020-09-25 13:25:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183.
[2020-09-25 13:25:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states.
[2020-09-25 13:25:54,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions.
[2020-09-25 13:25:54,980 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 135
[2020-09-25 13:25:54,980 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 13:25:54,980 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions.
[2020-09-25 13:25:54,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-25 13:25:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions.
[2020-09-25 13:25:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2020-09-25 13:25:54,985 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 13:25:54,985 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]
[2020-09-25 13:25:54,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-25 13:25:54,986 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 13:25:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 13:25:54,986 INFO L82 PathProgramCache]: Analyzing trace with hash -435645933, now seen corresponding path program 1 times
[2020-09-25 13:25:54,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 13:25:54,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098184196]
[2020-09-25 13:25:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 13:25:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 13:25:55,038 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 13:25:55,038 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 13:25:55,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-25 13:25:55,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:25:55 BoogieIcfgContainer
[2020-09-25 13:25:55,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 13:25:55,102 INFO L168 Benchmark]: Toolchain (without parser) took 25037.45 ms. Allocated memory was 139.5 MB in the beginning and 411.6 MB in the end (delta: 272.1 MB). Free memory was 102.2 MB in the beginning and 346.3 MB in the end (delta: -244.1 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB.
[2020-09-25 13:25:55,105 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
[2020-09-25 13:25:55,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.38 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 179.2 MB in the end (delta: -77.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB.
[2020-09-25 13:25:55,114 INFO L168 Benchmark]: Boogie Preprocessor took 63.29 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 176.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB.
[2020-09-25 13:25:55,115 INFO L168 Benchmark]: RCFGBuilder took 741.70 ms. Allocated memory is still 202.9 MB. Free memory was 176.2 MB in the beginning and 135.5 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB.
[2020-09-25 13:25:55,119 INFO L168 Benchmark]: TraceAbstraction took 23728.98 ms. Allocated memory was 202.9 MB in the beginning and 411.6 MB in the end (delta: 208.7 MB). Free memory was 135.5 MB in the beginning and 346.3 MB in the end (delta: -210.8 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 13:25:55,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 490.38 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 179.2 MB in the end (delta: -77.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 63.29 ms. Allocated memory is still 202.9 MB. Free memory was 179.2 MB in the beginning and 176.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 741.70 ms. Allocated memory is still 202.9 MB. Free memory was 176.2 MB in the beginning and 135.5 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 23728.98 ms. Allocated memory was 202.9 MB in the beginning and 411.6 MB in the end (delta: 208.7 MB). Free memory was 135.5 MB in the beginning and 346.3 MB in the end (delta: -210.8 MB). There was no memory consumed. 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:
[L96] 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;
[L96] RET, EXPR nondet_tree()
[L96] CALL task(nondet_tree())
[L74] CALL, EXPR min(t)
[L35] COND FALSE !(!n)
[L38] EXPR n->left
[L38] CALL, EXPR min(n->left)
[L35] COND TRUE !n
[L36] return 2147483647;
[L38] RET, EXPR min(n->left)
[L38] int a = min(n->left);
[L39] EXPR n->right
[L39] CALL, EXPR min(n->right)
[L35] COND TRUE !n
[L36] return 2147483647;
[L39] RET, EXPR min(n->right)
[L39] int b = min(n->right);
[L40] COND TRUE a <= b
[L40] return a;
[L74] RET, EXPR min(t)
[L74] int a = min(t);
[L75] int b;
[L77] CALL, EXPR size(t)
[L69] COND FALSE !(!t)
[L70] EXPR t->left
[L70] CALL, EXPR size(t->left)
[L69] COND TRUE !t
[L69] return 0;
[L70] RET, EXPR size(t->left)
[L70] EXPR t->right
[L70] CALL, EXPR size(t->right)
[L69] COND TRUE !t
[L69] return 0;
[L70] RET, EXPR size(t->right)
[L70] return size(t->left) + size(t->right) + 1;
[L77] RET, EXPR size(t)
[L77] int n = size(t);
[L78] CALL assume_abort_if_not(n != 0)
[L10] COND FALSE !(!cond)
[L78] RET assume_abort_if_not(n != 0)
[L79] EXPR, FCALL calloc(n, sizeof(int))
[L79] int *x = calloc(n, sizeof(int));
[L80] CALL tree_inorder(t, x, n)
[L58] COND FALSE !(!t)
[L61] EXPR t->left
[L61] CALL, EXPR tree_inorder(t->left, a, i)
[L58] COND TRUE !t
[L59] return i;
[L61] RET, EXPR tree_inorder(t->left, a, i)
[L61] i = tree_inorder(t->left, a, i)
[L62] EXPR i++
[L62] EXPR t->data
[L62] a[i++] = t->data
[L63] EXPR t->right
[L63] CALL, EXPR tree_inorder(t->right, a, i)
[L58] COND TRUE !t
[L59] return i;
[L63] RET, EXPR tree_inorder(t->right, a, i)
[L63] i = tree_inorder(t->right, a, i)
[L64] return i;
[L80] RET tree_inorder(t, x, n)
[L81] EXPR x[0]
[L81] CALL __VERIFIER_assert(a == x[0])
[L14] COND TRUE !cond
[L14] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 12 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.5s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 659 SDtfs, 1442 SDslu, 1797 SDs, 0 SdLazy, 2933 SolverSat, 615 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, 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, 0.2s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 383 ConstructedInterpolants, 0 QuantifiedInterpolants, 168237 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 76/90 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...