/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label08.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:14:34,455 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:14:34,458 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:14:34,482 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:14:34,482 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:14:34,484 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:14:34,485 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:14:34,487 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:14:34,488 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:14:34,489 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:14:34,490 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:14:34,491 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:14:34,491 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:14:34,492 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:14:34,493 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:14:34,494 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:14:34,498 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:14:34,499 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:14:34,501 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:14:34,502 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:14:34,504 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:14:34,505 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:14:34,506 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:14:34,507 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:14:34,509 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:14:34,510 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:14:34,510 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:14:34,511 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:14:34,511 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:14:34,512 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:14:34,512 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:14:34,513 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:14:34,514 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:14:34,514 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:14:34,515 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:14:34,516 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:14:34,516 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:14:34,516 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:14:34,517 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:14:34,517 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:14:34,518 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:14:34,519 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-14 01:14:34,540 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:14:34,541 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:14:34,542 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:14:34,542 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:14:34,542 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:14:34,542 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:14:34,543 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:14:34,543 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:14:34,543 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:14:34,543 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:14:34,543 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:14:34,543 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:14:34,544 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:14:34,544 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:14:34,544 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:14:34,544 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:14:34,544 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:14:34,545 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:14:34,545 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:14:34,545 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:14:34,545 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:14:34,545 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:14:34,545 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:14:34,546 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:14:34,546 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:14:34,546 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:14:34,546 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:14:34,546 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:14:34,547 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:14:34,547 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 -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
[2020-10-14 01:14:34,840 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:14:34,852 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:14:34,856 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:14:34,857 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:14:34,858 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:14:34,859 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label08.c
[2020-10-14 01:14:34,920 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db39ad3ea/3372b73ce10e4a9f8ef40e0ee8577eb2/FLAG2aecd9a31
[2020-10-14 01:14:35,822 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:14:35,823 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label08.c
[2020-10-14 01:14:35,873 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db39ad3ea/3372b73ce10e4a9f8ef40e0ee8577eb2/FLAG2aecd9a31
[2020-10-14 01:14:36,242 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db39ad3ea/3372b73ce10e4a9f8ef40e0ee8577eb2
[2020-10-14 01:14:36,251 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:14:36,254 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:14:36,255 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:14:36,255 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:14:36,259 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:14:36,260 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:14:36" (1/1) ...
[2020-10-14 01:14:36,263 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35692340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:36, skipping insertion in model container
[2020-10-14 01:14:36,263 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:14:36" (1/1) ...
[2020-10-14 01:14:36,272 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:14:36,527 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:14:39,047 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:14:39,052 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:14:40,386 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:14:40,459 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:14:40,460 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40 WrapperNode
[2020-10-14 01:14:40,461 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:14:40,461 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:14:40,462 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:14:40,462 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:14:40,476 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (1/1) ...
[2020-10-14 01:14:40,478 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (1/1) ...
[2020-10-14 01:14:40,556 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (1/1) ...
[2020-10-14 01:14:40,556 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (1/1) ...
[2020-10-14 01:14:40,706 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (1/1) ...
[2020-10-14 01:14:40,756 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (1/1) ...
[2020-10-14 01:14:40,799 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (1/1) ...
[2020-10-14 01:14:40,862 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:14:40,863 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:14:40,863 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:14:40,863 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:14:40,865 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:14:40,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:14:40,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:14:40,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:14:40,938 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:14:40,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:14:40,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:14:40,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:14:40,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:14:40,939 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:14:40,940 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:14:40,940 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:14:40,940 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:14:40,940 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:14:40,940 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:14:40,941 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:14:40,941 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:14:40,941 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:14:40,941 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:14:40,941 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:14:40,942 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:14:40,942 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:14:40,942 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:14:40,942 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:14:40,942 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:14:40,942 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:14:49,277 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:14:49,278 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:14:49,298 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:14:49 BoogieIcfgContainer
[2020-10-14 01:14:49,299 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:14:49,302 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:14:49,302 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:14:49,305 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:14:49,306 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:14:36" (1/3) ...
[2020-10-14 01:14:49,306 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca7aba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:14:49, skipping insertion in model container
[2020-10-14 01:14:49,307 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:40" (2/3) ...
[2020-10-14 01:14:49,307 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca7aba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:14:49, skipping insertion in model container
[2020-10-14 01:14:49,308 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:14:49" (3/3) ...
[2020-10-14 01:14:49,309 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label08.c
[2020-10-14 01:14:49,319 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:14:49,328 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:14:49,341 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:14:49,374 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:14:49,374 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:14:49,375 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:14:49,375 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:14:49,375 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:14:49,375 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:14:49,375 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:14:49,375 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:14:49,423 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:14:49,579 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1686
[2020-10-14 01:14:49,580 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:14:49,582 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:14:49,583 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:14:49,590 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:14:49,592 INFO  L82        PathProgramCache]: Analyzing trace with hash 1023896264, now seen corresponding path program 1 times
[2020-10-14 01:14:49,601 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:14:49,602 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76449234]
[2020-10-14 01:14:49,603 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:14:50,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:51,022 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:55,655 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:55,655 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1707
[2020-10-14 01:14:55,655 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:55,656 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5132
[2020-10-14 01:14:55,658 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:55,658 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:55,659 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:14:55,659 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:14:55,659 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1701
[2020-10-14 01:14:55,659 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:14:57,187 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:14:57,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:57,194 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:57,201 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:57,201 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:14:57,202 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:57,202 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:14:57,202 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:57,202 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:57,202 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:14:57,203 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:14:57,203 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:14:57,203 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:00,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:15:00,512 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76449234]
[2020-10-14 01:15:00,514 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:15:00,515 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-14 01:15:00,516 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16634662]
[2020-10-14 01:15:00,525 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 01:15:00,525 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:15:00,536 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 01:15:00,537 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:15:00,538 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-14 01:15:27,010 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:15:27,010 INFO  L93              Difference]: Finished difference Result 8234 states and 15615 transitions.
[2020-10-14 01:15:27,011 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-14 01:15:27,013 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1685
[2020-10-14 01:15:27,021 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:15:27,080 INFO  L225             Difference]: With dead ends: 8234
[2020-10-14 01:15:27,080 INFO  L226             Difference]: Without dead ends: 5944
[2020-10-14 01:15:27,097 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:15:27,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5944 states.
[2020-10-14 01:15:27,323 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5825.
[2020-10-14 01:15:27,324 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5825 states.
[2020-10-14 01:15:27,351 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 10164 transitions.
[2020-10-14 01:15:27,353 INFO  L78                 Accepts]: Start accepts. Automaton has 5825 states and 10164 transitions. Word has length 1685
[2020-10-14 01:15:27,357 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:15:27,357 INFO  L479      AbstractCegarLoop]: Abstraction has 5825 states and 10164 transitions.
[2020-10-14 01:15:27,358 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 01:15:27,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 5825 states and 10164 transitions.
[2020-10-14 01:15:27,477 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1712
[2020-10-14 01:15:27,477 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:15:27,479 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:15:27,480 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:15:27,480 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:15:27,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:15:27,481 INFO  L82        PathProgramCache]: Analyzing trace with hash 1996335885, now seen corresponding path program 1 times
[2020-10-14 01:15:27,482 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:15:27,482 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907284573]
[2020-10-14 01:15:27,483 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:15:27,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:27,652 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:28,089 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:32,896 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:32,896 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1735
[2020-10-14 01:15:32,896 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:15:32,896 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5276
[2020-10-14 01:15:32,897 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:32,898 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:32,898 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:15:32,901 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:15:32,902 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-10-14 01:15:32,902 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-10-14 01:15:34,638 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:15:34,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:34,644 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:34,651 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:34,652 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:15:34,652 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:34,652 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:15:34,653 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:34,653 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:34,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:15:34,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:34,661 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:15:34,662 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-10-14 01:15:34,692 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:15:34,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:34,704 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:34,746 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:34,747 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 01:15:34,747 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:34,747 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 46
[2020-10-14 01:15:34,747 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:34,747 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:34,748 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:34,748 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:15:34,748 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-14 01:15:34,748 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:36,002 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:15:36,003 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907284573]
[2020-10-14 01:15:36,003 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:15:36,003 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:15:36,004 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985746258]
[2020-10-14 01:15:36,008 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:15:36,008 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:15:36,008 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:15:36,009 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:15:36,009 INFO  L87              Difference]: Start difference. First operand 5825 states and 10164 transitions. Second operand 7 states.
[2020-10-14 01:15:59,488 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:15:59,489 INFO  L93              Difference]: Finished difference Result 17215 states and 30555 transitions.
[2020-10-14 01:15:59,489 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-14 01:15:59,490 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1711
[2020-10-14 01:15:59,490 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:15:59,558 INFO  L225             Difference]: With dead ends: 17215
[2020-10-14 01:15:59,558 INFO  L226             Difference]: Without dead ends: 11396
[2020-10-14 01:15:59,579 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:15:59,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11396 states.
[2020-10-14 01:15:59,903 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11396 to 11255.
[2020-10-14 01:15:59,904 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11255 states.
[2020-10-14 01:15:59,931 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11255 states to 11255 states and 17691 transitions.
[2020-10-14 01:15:59,932 INFO  L78                 Accepts]: Start accepts. Automaton has 11255 states and 17691 transitions. Word has length 1711
[2020-10-14 01:15:59,933 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:15:59,933 INFO  L479      AbstractCegarLoop]: Abstraction has 11255 states and 17691 transitions.
[2020-10-14 01:15:59,933 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:15:59,933 INFO  L276                IsEmpty]: Start isEmpty. Operand 11255 states and 17691 transitions.
[2020-10-14 01:16:00,003 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1741
[2020-10-14 01:16:00,005 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:16:00,007 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:16:00,007 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:16:00,007 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:16:00,008 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:16:00,008 INFO  L82        PathProgramCache]: Analyzing trace with hash 1357015147, now seen corresponding path program 1 times
[2020-10-14 01:16:00,009 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:16:00,009 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406617167]
[2020-10-14 01:16:00,010 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:16:00,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:00,203 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:00,600 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:05,393 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:05,394 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1764
[2020-10-14 01:16:05,394 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:16:05,394 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5232
[2020-10-14 01:16:05,395 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:05,395 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:05,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:16:05,395 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:16:05,396 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 61
[2020-10-14 01:16:05,396 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:16:06,507 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:16:06,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:06,512 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:06,519 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:06,519 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:16:06,519 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:06,520 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 01:16:06,520 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:06,520 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:06,521 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:16:06,521 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:06,521 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:16:06,522 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:16:06,542 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:16:06,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:06,686 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:06,760 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:06,760 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-10-14 01:16:06,760 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:06,761 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 202
[2020-10-14 01:16:06,761 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:06,761 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:06,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:06,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:16:06,762 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-10-14 01:16:06,762 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:07,870 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:16:07,870 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406617167]
[2020-10-14 01:16:07,870 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:16:07,871 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:16:07,871 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533025489]
[2020-10-14 01:16:07,876 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:16:07,876 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:16:07,877 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:16:07,877 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:16:07,877 INFO  L87              Difference]: Start difference. First operand 11255 states and 17691 transitions. Second operand 7 states.
[2020-10-14 01:16:30,438 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:16:30,439 INFO  L93              Difference]: Finished difference Result 34188 states and 55906 transitions.
[2020-10-14 01:16:30,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:16:30,440 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1740
[2020-10-14 01:16:30,440 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:16:30,543 INFO  L225             Difference]: With dead ends: 34188
[2020-10-14 01:16:30,543 INFO  L226             Difference]: Without dead ends: 22939
[2020-10-14 01:16:30,590 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:16:30,621 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22939 states.
[2020-10-14 01:16:31,253 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22939 to 22514.
[2020-10-14 01:16:31,253 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22514 states.
[2020-10-14 01:16:31,314 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22514 states to 22514 states and 32252 transitions.
[2020-10-14 01:16:31,315 INFO  L78                 Accepts]: Start accepts. Automaton has 22514 states and 32252 transitions. Word has length 1740
[2020-10-14 01:16:31,317 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:16:31,317 INFO  L479      AbstractCegarLoop]: Abstraction has 22514 states and 32252 transitions.
[2020-10-14 01:16:31,317 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:16:31,317 INFO  L276                IsEmpty]: Start isEmpty. Operand 22514 states and 32252 transitions.
[2020-10-14 01:16:31,602 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1763
[2020-10-14 01:16:31,602 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:16:31,604 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:16:31,604 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:16:31,604 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:16:31,607 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:16:31,608 INFO  L82        PathProgramCache]: Analyzing trace with hash -1280561204, now seen corresponding path program 1 times
[2020-10-14 01:16:31,609 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:16:31,617 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802508785]
[2020-10-14 01:16:31,619 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:16:31,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:31,842 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:32,173 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:32,550 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:36,872 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:36,873 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1788
[2020-10-14 01:16:36,873 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:16:36,873 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5088
[2020-10-14 01:16:36,873 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:36,873 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:36,873 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:36,874 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 32
[2020-10-14 01:16:36,874 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 58
[2020-10-14 01:16:36,874 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:37,187 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:16:37,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:37,190 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:37,192 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:37,193 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:16:37,193 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:37,193 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:16:37,193 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:37,194 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:37,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:16:37,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:37,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:16:37,194 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:37,210 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:16:37,216 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:37,220 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:37,237 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:37,237 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:16:37,237 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:37,238 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 19
[2020-10-14 01:16:37,238 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:37,238 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:37,238 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:16:37,239 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:37,239 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:16:37,239 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:16:37,255 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-14 01:16:37,268 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:37,279 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:37,356 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:37,356 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-10-14 01:16:37,357 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:37,357 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 86
[2020-10-14 01:16:37,357 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:37,357 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:37,357 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:37,358 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:16:37,358 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-10-14 01:16:37,358 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:16:38,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 93 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:16:38,741 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802508785]
[2020-10-14 01:16:38,742 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:16:38,742 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-14 01:16:38,742 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411183606]
[2020-10-14 01:16:38,744 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:16:38,745 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:16:38,745 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:16:38,745 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:16:38,745 INFO  L87              Difference]: Start difference. First operand 22514 states and 32252 transitions. Second operand 8 states.
[2020-10-14 01:17:22,168 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:17:22,169 INFO  L93              Difference]: Finished difference Result 110036 states and 174787 transitions.
[2020-10-14 01:17:22,170 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-14 01:17:22,170 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1762
[2020-10-14 01:17:22,170 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:17:22,581 INFO  L225             Difference]: With dead ends: 110036
[2020-10-14 01:17:22,581 INFO  L226             Difference]: Without dead ends: 87528
[2020-10-14 01:17:22,707 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-14 01:17:22,808 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 87528 states.
[2020-10-14 01:17:24,507 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 87528 to 85651.
[2020-10-14 01:17:24,508 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 85651 states.
[2020-10-14 01:17:24,751 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85651 states to 85651 states and 121167 transitions.
[2020-10-14 01:17:24,752 INFO  L78                 Accepts]: Start accepts. Automaton has 85651 states and 121167 transitions. Word has length 1762
[2020-10-14 01:17:24,753 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:17:24,753 INFO  L479      AbstractCegarLoop]: Abstraction has 85651 states and 121167 transitions.
[2020-10-14 01:17:24,753 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:17:24,753 INFO  L276                IsEmpty]: Start isEmpty. Operand 85651 states and 121167 transitions.
[2020-10-14 01:17:25,042 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1818
[2020-10-14 01:17:25,043 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:17:25,044 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:17:25,044 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:17:25,045 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:17:25,045 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:17:25,045 INFO  L82        PathProgramCache]: Analyzing trace with hash 1888256856, now seen corresponding path program 1 times
[2020-10-14 01:17:25,046 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:17:25,046 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952486891]
[2020-10-14 01:17:25,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:17:25,193 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:25,258 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:27,682 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:28,316 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:30,240 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:30,241 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1845
[2020-10-14 01:17:30,241 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:17:30,241 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5044
[2020-10-14 01:17:30,241 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:30,242 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:30,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:17:30,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 32
[2020-10-14 01:17:30,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 68
[2020-10-14 01:17:30,242 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:17:30,576 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:17:30,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:30,579 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:30,584 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:30,588 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:17:30,588 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:30,588 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 01:17:30,589 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:30,589 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:30,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:17:30,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:17:30,591 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:17:30,591 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:17:30,608 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:17:30,613 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:30,616 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:30,630 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:30,631 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:17:30,631 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:30,631 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-14 01:17:30,631 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:30,631 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:30,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:17:30,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:17:30,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:17:30,632 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:30,638 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-14 01:17:30,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:30,655 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:30,732 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:30,732 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 66
[2020-10-14 01:17:30,732 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:30,733 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 82
[2020-10-14 01:17:30,733 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:30,733 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:30,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:17:30,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:17:30,734 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 66
[2020-10-14 01:17:30,734 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:30,788 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95
[2020-10-14 01:17:30,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:30,805 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:30,832 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:30,833 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-10-14 01:17:30,833 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:30,833 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-14 01:17:30,834 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:30,834 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:30,835 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:17:30,835 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-10-14 01:17:30,835 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:17:30,836 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:32,632 INFO  L134       CoverageAnalysis]: Checked inductivity of 212 backedges. 146 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2020-10-14 01:17:32,633 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952486891]
[2020-10-14 01:17:32,633 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:17:32,633 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:17:32,633 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287092113]
[2020-10-14 01:17:32,636 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:17:32,636 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:17:32,636 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:17:32,637 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:17:32,637 INFO  L87              Difference]: Start difference. First operand 85651 states and 121167 transitions. Second operand 7 states.
[2020-10-14 01:18:16,699 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:18:16,700 INFO  L93              Difference]: Finished difference Result 332588 states and 566802 transitions.
[2020-10-14 01:18:16,701 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:18:16,701 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1817
[2020-10-14 01:18:16,701 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.