/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=DEEPEST --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_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c


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


This is Ultimate 0.1.25-c90d42b
[2020-09-25 01:12:19,418 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-25 01:12:19,424 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 01:12:19,483 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 01:12:19,485 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 01:12:19,489 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 01:12:19,494 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 01:12:19,497 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 01:12:19,500 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 01:12:19,504 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 01:12:19,505 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 01:12:19,506 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 01:12:19,506 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 01:12:19,509 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 01:12:19,511 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 01:12:19,512 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 01:12:19,514 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 01:12:19,515 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 01:12:19,517 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 01:12:19,525 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 01:12:19,527 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 01:12:19,529 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 01:12:19,530 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 01:12:19,531 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 01:12:19,543 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 01:12:19,543 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 01:12:19,543 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 01:12:19,545 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 01:12:19,545 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 01:12:19,546 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 01:12:19,546 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 01:12:19,549 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 01:12:19,550 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 01:12:19,550 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 01:12:19,552 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 01:12:19,552 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 01:12:19,553 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 01:12:19,553 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 01:12:19,553 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 01:12:19,555 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 01:12:19,556 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 01:12:19,557 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 01:12:19,604 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-25 01:12:19,604 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 01:12:19,606 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 01:12:19,606 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-25 01:12:19,606 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-25 01:12:19,606 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 01:12:19,607 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-25 01:12:19,607 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-25 01:12:19,607 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-25 01:12:19,608 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-25 01:12:19,609 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 01:12:19,609 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 01:12:19,609 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 01:12:19,609 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-25 01:12:19,610 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-25 01:12:19,610 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-25 01:12:19,610 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-25 01:12:19,610 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 01:12:19,610 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-25 01:12:19,611 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-25 01:12:19,611 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-25 01:12:19,611 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 01:12:19,611 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 01:12:19,611 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 01:12:19,612 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 01:12:19,612 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-25 01:12:19,612 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 01:12:19,612 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 01:12:19,612 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-25 01:12:19,613 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true;
[2020-09-25 01:12:20,125 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 01:12:20,147 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 01:12:20,152 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 01:12:20,154 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-25 01:12:20,155 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-25 01:12:20,156 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-25 01:12:20,233 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6022f6307/407cd24003244e81aa511935ee088fa7/FLAG6e5baf6a2
[2020-09-25 01:12:20,992 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-25 01:12:20,993 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-25 01:12:21,014 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6022f6307/407cd24003244e81aa511935ee088fa7/FLAG6e5baf6a2
[2020-09-25 01:12:21,116 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6022f6307/407cd24003244e81aa511935ee088fa7
[2020-09-25 01:12:21,129 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 01:12:21,134 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 01:12:21,135 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 01:12:21,136 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 01:12:21,140 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 01:12:21,141 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:12:21" (1/1) ...
[2020-09-25 01:12:21,145 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658c4011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:21, skipping insertion in model container
[2020-09-25 01:12:21,146 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:12:21" (1/1) ...
[2020-09-25 01:12:21,155 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-25 01:12:21,252 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-25 01:12:21,982 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 01:12:21,996 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-25 01:12:22,492 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-25 01:12:22,517 INFO  L208         MainTranslator]: Completed translation
[2020-09-25 01:12:22,518 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22 WrapperNode
[2020-09-25 01:12:22,518 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 01:12:22,519 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 01:12:22,519 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 01:12:22,519 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 01:12:22,539 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ...
[2020-09-25 01:12:22,539 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ...
[2020-09-25 01:12:22,561 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ...
[2020-09-25 01:12:22,561 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ...
[2020-09-25 01:12:22,594 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ...
[2020-09-25 01:12:22,637 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ...
[2020-09-25 01:12:22,646 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (1/1) ...
[2020-09-25 01:12:22,663 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 01:12:22,664 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 01:12:22,664 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 01:12:22,664 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-25 01:12:22,666 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (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 01:12:22,791 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 01:12:22,792 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 01:12:22,793 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-25 01:12:22,793 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 01:12:22,794 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 01:12:22,794 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2020-09-25 01:12:22,794 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-09-25 01:12:22,795 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2020-09-25 01:12:22,796 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-09-25 01:12:22,796 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-25 01:12:22,796 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-09-25 01:12:22,797 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2020-09-25 01:12:22,797 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2020-09-25 01:12:22,797 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2020-09-25 01:12:22,798 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2020-09-25 01:12:22,799 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-09-25 01:12:22,799 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-09-25 01:12:22,800 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-25 01:12:22,800 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 01:12:22,800 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 01:12:25,383 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 01:12:25,383 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 01:12:25,397 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:12:25 BoogieIcfgContainer
[2020-09-25 01:12:25,397 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 01:12:25,399 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 01:12:25,399 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 01:12:25,403 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-25 01:12:25,403 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:12:21" (1/3) ...
[2020-09-25 01:12:25,404 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262d87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:12:25, skipping insertion in model container
[2020-09-25 01:12:25,405 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:12:22" (2/3) ...
[2020-09-25 01:12:25,405 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3262d87b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:12:25, skipping insertion in model container
[2020-09-25 01:12:25,405 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:12:25" (3/3) ...
[2020-09-25 01:12:25,407 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2020-09-25 01:12:25,420 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 01:12:25,432 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2020-09-25 01:12:25,456 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2020-09-25 01:12:25,491 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-25 01:12:25,491 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-25 01:12:25,491 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 01:12:25,491 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 01:12:25,491 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 01:12:25,491 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-25 01:12:25,492 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 01:12:25,492 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 01:12:25,536 INFO  L276                IsEmpty]: Start isEmpty. Operand 1127 states.
[2020-09-25 01:12:25,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 424
[2020-09-25 01:12:25,575 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 01:12:25,579 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]
[2020-09-25 01:12:25,579 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 01:12:25,588 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 01:12:25,589 INFO  L82        PathProgramCache]: Analyzing trace with hash -219806221, now seen corresponding path program 1 times
[2020-09-25 01:12:25,599 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 01:12:25,600 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577834407]
[2020-09-25 01:12:25,600 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 01:12:26,287 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:12:26,523 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:26,996 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:27,287 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:27,508 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:27,683 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:27,896 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:28,244 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:31,344 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:12:31,344 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 430
[2020-09-25 01:12:31,345 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 7
[2020-09-25 01:12:31,345 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5042
[2020-09-25 01:12:31,347 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:12:31,348 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 01:12:31,348 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 203
[2020-09-25 01:12:31,348 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 186
[2020-09-25 01:12:31,348 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-09-25 01:12:31,941 WARN  L193               SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-25 01:12:31,943 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 01:12:31,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:12:31,964 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:32,011 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:12:32,011 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-09-25 01:12:32,011 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:12:32,012 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 56
[2020-09-25 01:12:32,012 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:12:32,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 01:12:32,012 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:12:32,013 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 01:12:32,013 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 01:12:32,408 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 01:12:32,409 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577834407]
[2020-09-25 01:12:32,411 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 01:12:32,411 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-25 01:12:32,412 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698079576]
[2020-09-25 01:12:32,420 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-25 01:12:32,420 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 01:12:32,439 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-25 01:12:32,441 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 01:12:32,444 INFO  L87              Difference]: Start difference. First operand 1127 states. Second operand 4 states.
[2020-09-25 01:12:36,887 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 01:12:36,888 INFO  L93              Difference]: Finished difference Result 1833 states and 2360 transitions.
[2020-09-25 01:12:36,888 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-25 01:12:36,890 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 423
[2020-09-25 01:12:36,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 01:12:36,923 INFO  L225             Difference]: With dead ends: 1833
[2020-09-25 01:12:36,924 INFO  L226             Difference]: Without dead ends: 1303
[2020-09-25 01:12:36,933 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 01:12:36,957 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1303 states.
[2020-09-25 01:12:37,049 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1296.
[2020-09-25 01:12:37,051 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1296 states.
[2020-09-25 01:12:37,057 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1545 transitions.
[2020-09-25 01:12:37,059 INFO  L78                 Accepts]: Start accepts. Automaton has 1296 states and 1545 transitions. Word has length 423
[2020-09-25 01:12:37,061 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 01:12:37,061 INFO  L479      AbstractCegarLoop]: Abstraction has 1296 states and 1545 transitions.
[2020-09-25 01:12:37,062 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-25 01:12:37,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 1296 states and 1545 transitions.
[2020-09-25 01:12:37,103 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 424
[2020-09-25 01:12:37,103 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 01:12:37,103 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]
[2020-09-25 01:12:37,104 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 01:12:37,104 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 01:12:37,104 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 01:12:37,105 INFO  L82        PathProgramCache]: Analyzing trace with hash -74379501, now seen corresponding path program 1 times
[2020-09-25 01:12:37,105 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 01:12:37,105 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539280120]
[2020-09-25 01:12:37,106 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 01:12:37,254 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:12:37,427 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:37,705 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:37,877 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:38,045 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:38,187 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:38,317 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:41,509 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:41,853 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:42,257 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:42,342 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:12:42,342 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 430
[2020-09-25 01:12:42,343 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 9
[2020-09-25 01:12:42,343 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5084
[2020-09-25 01:12:42,344 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:12:42,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 01:12:42,345 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 175
[2020-09-25 01:12:42,346 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 72
[2020-09-25 01:12:42,346 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:12:43,234 WARN  L193               SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-25 01:12:43,235 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 01:12:43,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:12:43,259 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:43,302 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:12:43,303 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-09-25 01:12:43,303 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:12:43,303 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 53
[2020-09-25 01:12:43,303 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:12:43,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 01:12:43,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:12:43,304 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 01:12:43,304 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 01:12:43,575 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 01:12:43,576 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539280120]
[2020-09-25 01:12:43,576 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 01:12:43,576 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-25 01:12:43,576 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411102640]
[2020-09-25 01:12:43,580 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-25 01:12:43,580 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 01:12:43,580 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-25 01:12:43,581 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-09-25 01:12:43,581 INFO  L87              Difference]: Start difference. First operand 1296 states and 1545 transitions. Second operand 5 states.
[2020-09-25 01:12:50,735 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 01:12:50,736 INFO  L93              Difference]: Finished difference Result 3348 states and 4039 transitions.
[2020-09-25 01:12:50,737 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-09-25 01:12:50,737 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 423
[2020-09-25 01:12:50,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 01:12:50,752 INFO  L225             Difference]: With dead ends: 3348
[2020-09-25 01:12:50,752 INFO  L226             Difference]: Without dead ends: 2358
[2020-09-25 01:12:50,761 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-25 01:12:50,765 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2358 states.
[2020-09-25 01:12:50,869 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2236.
[2020-09-25 01:12:50,869 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2236 states.
[2020-09-25 01:12:50,876 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2236 states to 2236 states and 2703 transitions.
[2020-09-25 01:12:50,877 INFO  L78                 Accepts]: Start accepts. Automaton has 2236 states and 2703 transitions. Word has length 423
[2020-09-25 01:12:50,878 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 01:12:50,879 INFO  L479      AbstractCegarLoop]: Abstraction has 2236 states and 2703 transitions.
[2020-09-25 01:12:50,879 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-25 01:12:50,879 INFO  L276                IsEmpty]: Start isEmpty. Operand 2236 states and 2703 transitions.
[2020-09-25 01:12:50,885 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 425
[2020-09-25 01:12:50,886 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 01:12:50,886 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]
[2020-09-25 01:12:50,887 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 01:12:50,887 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 01:12:50,887 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 01:12:50,888 INFO  L82        PathProgramCache]: Analyzing trace with hash 1675164715, now seen corresponding path program 1 times
[2020-09-25 01:12:50,888 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 01:12:50,888 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667208539]
[2020-09-25 01:12:50,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 01:12:50,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:12:51,067 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:51,300 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:51,458 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:51,604 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:51,742 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:51,868 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:55,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:55,704 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:55,985 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:12:55,985 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 431
[2020-09-25 01:12:55,986 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 8
[2020-09-25 01:12:55,986 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5007
[2020-09-25 01:12:55,986 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:12:55,986 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 01:12:55,987 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 188
[2020-09-25 01:12:55,987 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 01:12:55,987 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:12:56,308 WARN  L193               SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2020-09-25 01:12:56,310 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 01:12:56,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:12:56,325 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:12:56,366 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:12:56,366 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 73
[2020-09-25 01:12:56,367 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:12:56,367 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-09-25 01:12:56,367 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:12:56,367 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 01:12:56,367 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:12:56,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 01:12:56,368 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 01:12:56,649 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 01:12:56,649 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667208539]
[2020-09-25 01:12:56,650 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 01:12:56,651 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-25 01:12:56,651 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638072181]
[2020-09-25 01:12:56,653 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-25 01:12:56,653 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 01:12:56,653 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-25 01:12:56,654 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 01:12:56,655 INFO  L87              Difference]: Start difference. First operand 2236 states and 2703 transitions. Second operand 4 states.
[2020-09-25 01:13:02,900 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 01:13:02,900 INFO  L93              Difference]: Finished difference Result 6213 states and 7554 transitions.
[2020-09-25 01:13:02,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-25 01:13:02,901 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 424
[2020-09-25 01:13:02,902 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 01:13:02,919 INFO  L225             Difference]: With dead ends: 6213
[2020-09-25 01:13:02,920 INFO  L226             Difference]: Without dead ends: 4227
[2020-09-25 01:13:02,924 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-25 01:13:02,930 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4227 states.
[2020-09-25 01:13:03,015 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 2242.
[2020-09-25 01:13:03,016 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2242 states.
[2020-09-25 01:13:03,022 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2711 transitions.
[2020-09-25 01:13:03,022 INFO  L78                 Accepts]: Start accepts. Automaton has 2242 states and 2711 transitions. Word has length 424
[2020-09-25 01:13:03,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-25 01:13:03,023 INFO  L479      AbstractCegarLoop]: Abstraction has 2242 states and 2711 transitions.
[2020-09-25 01:13:03,023 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-25 01:13:03,024 INFO  L276                IsEmpty]: Start isEmpty. Operand 2242 states and 2711 transitions.
[2020-09-25 01:13:03,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 426
[2020-09-25 01:13:03,030 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-25 01:13:03,031 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]
[2020-09-25 01:13:03,031 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 01:13:03,031 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 01:13:03,032 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 01:13:03,032 INFO  L82        PathProgramCache]: Analyzing trace with hash 152897813, now seen corresponding path program 1 times
[2020-09-25 01:13:03,032 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 01:13:03,032 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541008476]
[2020-09-25 01:13:03,033 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 01:13:03,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:13:03,275 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:13:03,451 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:13:03,600 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:13:03,747 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:13:03,874 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:13:04,759 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:13:05,404 FATAL L256   erpolLogProxyWrapper]: Now shrinking...