/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-c90d42b
[2020-09-24 19:37:42,921 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 19:37:42,924 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 19:37:42,954 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 19:37:42,954 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 19:37:42,955 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 19:37:42,957 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 19:37:42,960 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 19:37:42,961 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-09-24 19:37:42,963 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 19:37:42,964 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 19:37:42,966 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 19:37:42,967 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 19:37:42,968 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 19:37:42,970 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 19:37:42,972 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 19:37:42,976 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 19:37:42,978 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 19:37:42,983 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 19:37:42,984 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 19:37:42,985 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 19:37:42,991 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 19:37:42,992 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 19:37:42,992 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 19:37:42,996 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 19:37:42,997 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 19:37:43,000 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 19:37:43,000 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 19:37:43,001 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 19:37:43,003 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 19:37:43,004 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 19:37:43,005 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 19:37:43,006 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 19:37:43,006 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 19:37:43,007 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 19:37:43,008 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 19:37:43,009 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 19:37:43,011 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 19:37:43,012 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 19:37:43,066 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 19:37:43,067 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 19:37:43,069 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 19:37:43,069 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 19:37:43,069 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 19:37:43,069 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 19:37:43,070 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 19:37:43,070 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 19:37:43,071 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 19:37:43,071 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 19:37:43,072 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 19:37:43,072 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 19:37:43,072 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 19:37:43,073 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 19:37:43,073 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 19:37:43,074 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 19:37:43,074 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 19:37:43,074 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 19:37:43,074 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 19:37:43,075 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 19:37:43,076 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 19:37:43,076 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:37:43,076 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 19:37:43,076 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 19:37:43,077 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 19:37:43,077 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 19:37:43,078 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 19:37:43,078 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 19:37:43,078 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 19:37:43,078 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 19:37:43,516 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 19:37:43,533 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 19:37:43,539 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 19:37:43,541 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 19:37:43,542 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 19:37:43,543 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-09-24 19:37:43,636 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61bffebd8/0942d05ea0f54bbfa6397720b2e28328/FLAGa9f22bd2b
[2020-09-24 19:37:44,414 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 19:37:44,415 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-09-24 19:37:44,444 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61bffebd8/0942d05ea0f54bbfa6397720b2e28328/FLAGa9f22bd2b
[2020-09-24 19:37:44,539 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61bffebd8/0942d05ea0f54bbfa6397720b2e28328
[2020-09-24 19:37:44,552 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 19:37:44,558 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 19:37:44,559 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 19:37:44,560 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 19:37:44,564 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 19:37:44,565 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:37:44" (1/1) ...
[2020-09-24 19:37:44,569 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a59c72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:44, skipping insertion in model container
[2020-09-24 19:37:44,569 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:37:44" (1/1) ...
[2020-09-24 19:37:44,578 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 19:37:44,750 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 19:37:46,283 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:37:46,298 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 19:37:47,262 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:37:47,307 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 19:37:47,309 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47 WrapperNode
[2020-09-24 19:37:47,310 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 19:37:47,311 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 19:37:47,311 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 19:37:47,311 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 19:37:47,337 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (1/1) ...
[2020-09-24 19:37:47,340 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (1/1) ...
[2020-09-24 19:37:47,413 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (1/1) ...
[2020-09-24 19:37:47,414 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (1/1) ...
[2020-09-24 19:37:47,494 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (1/1) ...
[2020-09-24 19:37:47,534 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (1/1) ...
[2020-09-24 19:37:47,543 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (1/1) ...
[2020-09-24 19:37:47,558 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 19:37:47,558 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 19:37:47,558 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 19:37:47,559 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 19:37:47,560 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:37:47,651 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 19:37:47,651 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 19:37:47,652 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 19:37:47,652 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 19:37:47,652 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 19:37:47,652 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-09-24 19:37:47,653 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2020-09-24 19:37:47,653 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-24 19:37:47,653 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-09-24 19:37:47,653 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 19:37:47,653 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 19:37:47,654 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-09-24 19:37:47,654 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-09-24 19:37:47,654 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-09-24 19:37:47,654 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-09-24 19:37:47,654 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-09-24 19:37:47,655 INFO  L130     BoogieDeclarations]: Found specification of procedure node4
[2020-09-24 19:37:47,655 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-09-24 19:37:47,655 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-24 19:37:47,655 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 19:37:47,656 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 19:37:47,656 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 19:37:51,874 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 19:37:51,875 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 19:37:51,899 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:37:51 BoogieIcfgContainer
[2020-09-24 19:37:51,899 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 19:37:51,901 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 19:37:51,901 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 19:37:51,905 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 19:37:51,906 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:37:44" (1/3) ...
[2020-09-24 19:37:51,907 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693876df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:37:51, skipping insertion in model container
[2020-09-24 19:37:51,907 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:37:47" (2/3) ...
[2020-09-24 19:37:51,908 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693876df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:37:51, skipping insertion in model container
[2020-09-24 19:37:51,908 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:37:51" (3/3) ...
[2020-09-24 19:37:51,912 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c
[2020-09-24 19:37:51,925 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 19:37:51,943 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations.
[2020-09-24 19:37:51,966 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2020-09-24 19:37:52,013 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 19:37:52,013 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 19:37:52,013 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 19:37:52,013 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 19:37:52,013 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 19:37:52,014 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 19:37:52,014 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 19:37:52,014 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 19:37:52,086 INFO  L276                IsEmpty]: Start isEmpty. Operand 3048 states.
[2020-09-24 19:37:52,170 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 939
[2020-09-24 19:37:52,170 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 19:37:52,173 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:37:52,174 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:37:52,185 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:37:52,186 INFO  L82        PathProgramCache]: Analyzing trace with hash 197216454, now seen corresponding path program 1 times
[2020-09-24 19:37:52,199 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:37:52,199 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352211852]
[2020-09-24 19:37:52,200 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:37:53,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:37:54,076 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:37:54,681 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:37:54,682 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 945
[2020-09-24 19:37:54,682 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:37:54,683 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1399
[2020-09-24 19:37:54,686 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:37:54,686 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 19:37:54,687 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 403
[2020-09-24 19:37:54,687 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 478
[2020-09-24 19:37:54,688 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-24 19:37:56,462 WARN  L193               SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-09-24 19:37:56,464 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:37:56,477 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:37:56,494 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:37:56,570 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:37:56,571 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 117
[2020-09-24 19:37:56,571 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:37:56,571 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 92
[2020-09-24 19:37:56,571 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:37:56,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:37:56,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:37:56,572 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:37:56,572 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:37:57,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:37:57,243 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352211852]
[2020-09-24 19:37:57,245 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:37:57,245 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 19:37:57,246 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25788982]
[2020-09-24 19:37:57,258 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 19:37:57,258 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:37:57,275 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 19:37:57,276 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 19:37:57,279 INFO  L87              Difference]: Start difference. First operand 3048 states. Second operand 4 states.
[2020-09-24 19:38:11,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:38:11,892 INFO  L93              Difference]: Finished difference Result 4924 states and 6314 transitions.
[2020-09-24 19:38:11,892 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 19:38:11,894 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 938
[2020-09-24 19:38:11,899 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:38:11,944 INFO  L225             Difference]: With dead ends: 4924
[2020-09-24 19:38:11,944 INFO  L226             Difference]: Without dead ends: 3691
[2020-09-24 19:38:11,957 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 19:38:11,986 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3691 states.
[2020-09-24 19:38:12,154 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3675.
[2020-09-24 19:38:12,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3675 states.
[2020-09-24 19:38:12,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3675 states to 3675 states and 4464 transitions.
[2020-09-24 19:38:12,170 INFO  L78                 Accepts]: Start accepts. Automaton has 3675 states and 4464 transitions. Word has length 938
[2020-09-24 19:38:12,173 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:38:12,173 INFO  L479      AbstractCegarLoop]: Abstraction has 3675 states and 4464 transitions.
[2020-09-24 19:38:12,174 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 19:38:12,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 3675 states and 4464 transitions.
[2020-09-24 19:38:12,215 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 939
[2020-09-24 19:38:12,216 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 19:38:12,216 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:38:12,217 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 19:38:12,217 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:38:12,218 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:38:12,218 INFO  L82        PathProgramCache]: Analyzing trace with hash -1318155209, now seen corresponding path program 1 times
[2020-09-24 19:38:12,218 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:38:12,219 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607907130]
[2020-09-24 19:38:12,220 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:38:12,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:38:12,993 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:38:13,890 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:38:14,248 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:38:14,249 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 945
[2020-09-24 19:38:14,249 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 19:38:14,250 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1625
[2020-09-24 19:38:14,251 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:38:14,251 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-24 19:38:14,251 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 293
[2020-09-24 19:38:14,252 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 164
[2020-09-24 19:38:14,255 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-24 19:38:15,591 WARN  L193               SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 322
[2020-09-24 19:38:15,595 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 19:38:15,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:38:15,640 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:38:15,735 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:38:15,735 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 117
[2020-09-24 19:38:15,736 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 19:38:15,736 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 114
[2020-09-24 19:38:15,738 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:38:15,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 19:38:15,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 19:38:15,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 19:38:15,740 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 19:38:17,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 19:38:17,115 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607907130]
[2020-09-24 19:38:17,115 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 19:38:17,115 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 19:38:17,116 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333603862]
[2020-09-24 19:38:17,119 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 19:38:17,119 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 19:38:17,119 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 19:38:17,120 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-24 19:38:17,120 INFO  L87              Difference]: Start difference. First operand 3675 states and 4464 transitions. Second operand 5 states.
[2020-09-24 19:38:38,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 19:38:38,625 INFO  L93              Difference]: Finished difference Result 10297 states and 12619 transitions.
[2020-09-24 19:38:38,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-24 19:38:38,626 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 938
[2020-09-24 19:38:38,628 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 19:38:38,660 INFO  L225             Difference]: With dead ends: 10297
[2020-09-24 19:38:38,660 INFO  L226             Difference]: Without dead ends: 6932
[2020-09-24 19:38:38,668 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 19:38:38,678 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6932 states.
[2020-09-24 19:38:38,827 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6932 to 6381.
[2020-09-24 19:38:38,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6381 states.
[2020-09-24 19:38:38,849 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6381 states to 6381 states and 7876 transitions.
[2020-09-24 19:38:38,849 INFO  L78                 Accepts]: Start accepts. Automaton has 6381 states and 7876 transitions. Word has length 938
[2020-09-24 19:38:38,851 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 19:38:38,851 INFO  L479      AbstractCegarLoop]: Abstraction has 6381 states and 7876 transitions.
[2020-09-24 19:38:38,851 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 19:38:38,851 INFO  L276                IsEmpty]: Start isEmpty. Operand 6381 states and 7876 transitions.
[2020-09-24 19:38:38,876 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 941
[2020-09-24 19:38:38,876 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 19:38:38,877 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:38:38,878 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 19:38:38,878 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:38:38,878 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:38:38,879 INFO  L82        PathProgramCache]: Analyzing trace with hash 1280274577, now seen corresponding path program 1 times
[2020-09-24 19:38:38,879 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:38:38,879 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26648653]
[2020-09-24 19:38:38,880 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:38:39,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 19:38:39,202 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:38:39,495 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:38:39,978 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 19:38:40,234 FATAL L256   erpolLogProxyWrapper]: Timeout: 1000
[2020-09-24 19:38:40,235 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 947
[2020-09-24 19:38:40,235 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-24 19:38:40,235 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1202
[2020-09-24 19:38:40,235 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLEST
[2020-09-24 19:38:40,235 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-24 19:38:40,236 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 304
[2020-09-24 19:38:40,236 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-24 19:38:40,236 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0