/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_label07.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:14:00,344 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:14:00,346 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:14:00,371 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:14:00,372 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:14:00,374 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:14:00,376 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:14:00,383 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:14:00,385 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:14:00,387 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:14:00,389 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:14:00,391 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:14:00,391 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:14:00,392 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:14:00,393 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:14:00,397 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:14:00,399 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:14:00,402 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:14:00,405 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:14:00,410 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:14:00,415 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:14:00,416 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:14:00,418 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:14:00,418 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:14:00,424 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:14:00,424 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:14:00,424 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:14:00,427 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:14:00,428 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:14:00,429 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:14:00,429 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:14:00,430 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:14:00,431 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:14:00,432 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:14:00,442 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:14:00,443 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:14:00,444 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:14:00,444 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:14:00,444 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:14:00,445 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:14:00,446 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:14:00,447 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 01:14:00,492 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:14:00,493 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:14:00,495 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:14:00,495 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:14:00,495 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:14:00,495 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:14:00,496 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:14:00,496 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:14:00,496 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:14:00,496 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:14:00,497 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:14:00,497 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:14:00,497 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:14:00,498 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:14:00,498 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:14:00,498 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:14:00,498 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:14:00,499 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:14:00,499 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:14:00,499 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:14:00,499 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:14:00,499 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:14:00,500 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:14:00,500 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:14:00,500 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:14:00,500 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:14:00,500 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:14:00,500 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:14:00,501 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:14:00,501 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 01:14:00,815 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:14:00,838 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:14:00,843 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:14:00,845 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:14:00,845 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:14:00,846 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label07.c
[2020-10-14 01:14:00,919 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/806d3c0f1/c3aa649904524d07945064ebe43087ee/FLAG4a029e751
[2020-10-14 01:14:01,987 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:14:01,988 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label07.c
[2020-10-14 01:14:02,036 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/806d3c0f1/c3aa649904524d07945064ebe43087ee/FLAG4a029e751
[2020-10-14 01:14:02,273 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/806d3c0f1/c3aa649904524d07945064ebe43087ee
[2020-10-14 01:14:02,284 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:14:02,286 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:14:02,287 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:14:02,287 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:14:02,291 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:14:02,292 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:14:02" (1/1) ...
[2020-10-14 01:14:02,295 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b4c5c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:02, skipping insertion in model container
[2020-10-14 01:14:02,295 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:14:02" (1/1) ...
[2020-10-14 01:14:02,303 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:14:02,568 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:14:05,244 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:14:05,252 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:14:06,352 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:14:06,447 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:14:06,448 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06 WrapperNode
[2020-10-14 01:14:06,449 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:14:06,450 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:14:06,450 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:14:06,450 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:14:06,473 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (1/1) ...
[2020-10-14 01:14:06,475 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (1/1) ...
[2020-10-14 01:14:06,595 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (1/1) ...
[2020-10-14 01:14:06,596 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (1/1) ...
[2020-10-14 01:14:06,879 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (1/1) ...
[2020-10-14 01:14:06,987 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (1/1) ...
[2020-10-14 01:14:07,082 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (1/1) ...
[2020-10-14 01:14:07,340 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:14:07,341 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:14:07,341 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:14:07,341 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:14:07,342 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (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 01:14:07,428 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:14:07,429 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:14:07,429 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:14:07,429 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:14:07,429 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:14:07,429 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:14:07,430 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:14:07,432 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:14:07,432 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:14:07,432 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:14:07,433 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:14:07,434 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:14:07,434 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:14:07,434 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:14:07,435 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:14:07,437 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:14:07,438 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:14:07,438 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:14:07,438 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:14:07,438 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:14:07,438 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:14:07,439 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:14:07,439 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:14:07,439 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:14:07,440 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:14:15,180 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:14:15,181 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:14:15,201 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:14:15 BoogieIcfgContainer
[2020-10-14 01:14:15,201 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:14:15,205 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:14:15,205 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:14:15,208 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:14:15,209 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:14:02" (1/3) ...
[2020-10-14 01:14:15,209 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7daa978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:14:15, skipping insertion in model container
[2020-10-14 01:14:15,210 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:14:06" (2/3) ...
[2020-10-14 01:14:15,211 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7daa978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:14:15, skipping insertion in model container
[2020-10-14 01:14:15,211 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:14:15" (3/3) ...
[2020-10-14 01:14:15,213 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label07.c
[2020-10-14 01:14:15,224 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:14:15,239 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:14:15,254 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:14:15,295 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:14:15,295 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:14:15,295 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:14:15,295 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:14:15,295 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:14:15,296 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:14:15,296 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:14:15,296 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:14:15,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:14:15,454 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1682
[2020-10-14 01:14:15,454 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:14:15,458 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]
[2020-10-14 01:14:15,458 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:14:15,465 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:14:15,466 INFO  L82        PathProgramCache]: Analyzing trace with hash -1946977160, now seen corresponding path program 1 times
[2020-10-14 01:14:15,476 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:14:15,476 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894636700]
[2020-10-14 01:14:15,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:14:16,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:16,888 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:21,557 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:21,558 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1703
[2020-10-14 01:14:21,558 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:21,558 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5085
[2020-10-14 01:14:21,560 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:21,561 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:21,561 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:14:21,561 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:14:21,561 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1697
[2020-10-14 01:14:21,562 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:14:22,884 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:14:22,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:22,898 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:22,913 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:22,913 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:14:22,913 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:22,913 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-14 01:14:22,914 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:22,914 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:22,914 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:14:22,914 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:14:22,915 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:14:22,915 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:25,305 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 01:14:25,305 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894636700]
[2020-10-14 01:14:25,307 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:14:25,308 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:14:25,309 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132262336]
[2020-10-14 01:14:25,318 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:14:25,318 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:14:25,328 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:14:25,329 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:14:25,331 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:14:42,069 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:14:42,070 INFO  L93              Difference]: Finished difference Result 6360 states and 11961 transitions.
[2020-10-14 01:14:42,071 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:14:42,073 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1681
[2020-10-14 01:14:42,086 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:14:42,148 INFO  L225             Difference]: With dead ends: 6360
[2020-10-14 01:14:42,149 INFO  L226             Difference]: Without dead ends: 4074
[2020-10-14 01:14:42,162 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:14:42,188 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4074 states.
[2020-10-14 01:14:42,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4004.
[2020-10-14 01:14:42,395 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4004 states.
[2020-10-14 01:14:42,415 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 6504 transitions.
[2020-10-14 01:14:42,418 INFO  L78                 Accepts]: Start accepts. Automaton has 4004 states and 6504 transitions. Word has length 1681
[2020-10-14 01:14:42,423 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:14:42,423 INFO  L479      AbstractCegarLoop]: Abstraction has 4004 states and 6504 transitions.
[2020-10-14 01:14:42,424 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:14:42,424 INFO  L276                IsEmpty]: Start isEmpty. Operand 4004 states and 6504 transitions.
[2020-10-14 01:14:42,609 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2020-10-14 01:14:42,609 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:14:42,610 INFO  L422         BasicCegarLoop]: trace histogram [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, 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 01:14:42,611 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:14:42,611 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:14:42,612 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:14:42,613 INFO  L82        PathProgramCache]: Analyzing trace with hash 1089461255, now seen corresponding path program 1 times
[2020-10-14 01:14:42,614 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:14:42,614 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123269125]
[2020-10-14 01:14:42,615 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:14:43,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:43,432 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:44,100 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:48,182 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:48,183 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1716
[2020-10-14 01:14:48,183 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:14:48,183 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5088
[2020-10-14 01:14:48,184 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:48,185 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:48,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:14:48,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:14:48,185 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:14:48,186 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:14:50,166 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:14:50,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:50,171 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:50,175 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:50,176 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:14:50,176 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:50,176 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:14:50,176 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:50,177 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:50,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:14:50,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:14:50,177 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:14:50,178 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:50,194 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:14:50,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:50,201 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:50,224 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:50,224 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 01:14:50,224 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:50,224 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-10-14 01:14:50,225 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:50,225 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:50,225 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:14:50,225 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:14:50,226 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-14 01:14:50,226 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:51,264 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:14:51,265 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123269125]
[2020-10-14 01:14:51,265 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:14:51,265 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:14:51,265 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546008831]
[2020-10-14 01:14:51,275 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:14:51,275 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:14:51,275 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:14:51,276 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:14:51,276 INFO  L87              Difference]: Start difference. First operand 4004 states and 6504 transitions. Second operand 7 states.
[2020-10-14 01:15:23,986 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:15:23,987 INFO  L93              Difference]: Finished difference Result 15369 states and 25428 transitions.
[2020-10-14 01:15:23,988 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:15:23,988 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1692
[2020-10-14 01:15:23,988 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:15:24,050 INFO  L225             Difference]: With dead ends: 15369
[2020-10-14 01:15:24,051 INFO  L226             Difference]: Without dead ends: 11371
[2020-10-14 01:15:24,068 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:15:24,083 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11371 states.
[2020-10-14 01:15:24,364 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11371 to 11316.
[2020-10-14 01:15:24,365 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11316 states.
[2020-10-14 01:15:24,411 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11316 states to 11316 states and 15375 transitions.
[2020-10-14 01:15:24,412 INFO  L78                 Accepts]: Start accepts. Automaton has 11316 states and 15375 transitions. Word has length 1692
[2020-10-14 01:15:24,412 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:15:24,413 INFO  L479      AbstractCegarLoop]: Abstraction has 11316 states and 15375 transitions.
[2020-10-14 01:15:24,413 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:15:24,413 INFO  L276                IsEmpty]: Start isEmpty. Operand 11316 states and 15375 transitions.
[2020-10-14 01:15:24,588 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1704
[2020-10-14 01:15:24,588 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:15:24,590 INFO  L422         BasicCegarLoop]: trace histogram [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, 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 01:15:24,591 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:15:24,592 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:15:24,592 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:15:24,593 INFO  L82        PathProgramCache]: Analyzing trace with hash 977117623, now seen corresponding path program 1 times
[2020-10-14 01:15:24,593 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:15:24,594 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488107632]
[2020-10-14 01:15:24,595 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:15:25,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:25,596 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:26,240 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:26,785 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:30,287 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:30,287 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1727
[2020-10-14 01:15:30,287 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:15:30,287 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5087
[2020-10-14 01:15:30,288 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:30,288 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:30,288 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:15:30,288 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:15:30,288 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-14 01:15:30,288 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:30,717 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:15:30,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:30,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:30,726 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:30,727 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:15:30,727 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:30,727 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:15:30,727 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:30,728 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:30,728 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:15:30,728 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:30,728 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:15:30,728 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:30,755 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:15:30,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:30,765 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:30,804 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:30,804 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:15:30,804 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:30,805 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 42
[2020-10-14 01:15:30,805 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:30,805 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:30,805 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:30,806 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:15:30,806 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-14 01:15:30,806 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:31,998 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:15:31,999 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488107632]
[2020-10-14 01:15:31,999 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:15:31,999 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:15:32,000 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682598147]
[2020-10-14 01:15:32,001 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:15:32,001 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:15:32,002 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:15:32,002 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:15:32,002 INFO  L87              Difference]: Start difference. First operand 11316 states and 15375 transitions. Second operand 7 states.
[2020-10-14 01:15:54,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:15:54,676 INFO  L93              Difference]: Finished difference Result 27190 states and 37874 transitions.
[2020-10-14 01:15:54,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-14 01:15:54,681 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1703
[2020-10-14 01:15:54,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:15:54,759 INFO  L225             Difference]: With dead ends: 27190
[2020-10-14 01:15:54,759 INFO  L226             Difference]: Without dead ends: 15880
[2020-10-14 01:15:54,796 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-14 01:15:54,820 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15880 states.
[2020-10-14 01:15:55,277 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15880 to 15300.
[2020-10-14 01:15:55,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15300 states.
[2020-10-14 01:15:55,312 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15300 states to 15300 states and 19872 transitions.
[2020-10-14 01:15:55,312 INFO  L78                 Accepts]: Start accepts. Automaton has 15300 states and 19872 transitions. Word has length 1703
[2020-10-14 01:15:55,313 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:15:55,313 INFO  L479      AbstractCegarLoop]: Abstraction has 15300 states and 19872 transitions.
[2020-10-14 01:15:55,313 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:15:55,313 INFO  L276                IsEmpty]: Start isEmpty. Operand 15300 states and 19872 transitions.
[2020-10-14 01:15:55,378 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1708
[2020-10-14 01:15:55,378 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:15:55,380 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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, 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]
[2020-10-14 01:15:55,380 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:15:55,380 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:15:55,381 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:15:55,381 INFO  L82        PathProgramCache]: Analyzing trace with hash -1872130108, now seen corresponding path program 1 times
[2020-10-14 01:15:55,382 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:15:55,382 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737051140]
[2020-10-14 01:15:55,382 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:15:55,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:55,518 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:55,586 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:00,721 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:00,721 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1733
[2020-10-14 01:16:00,722 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:16:00,722 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5226
[2020-10-14 01:16:00,722 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:00,722 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:00,722 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:00,723 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 22
[2020-10-14 01:16:00,723 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:16:00,723 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:16:01,051 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:16:01,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:01,054 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:01,057 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:01,057 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:16:01,058 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:01,058 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 01:16:01,059 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:01,059 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:01,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:16:01,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:01,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:16:01,060 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:01,082 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:16:01,085 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:01,089 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:01,098 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:01,099 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-14 01:16:01,099 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:01,099 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-14 01:16:01,099 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:01,100 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:01,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:16:01,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:01,100 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-14 01:16:01,100 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:16:01,107 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-10-14 01:16:01,113 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:01,116 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:01,140 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:01,140 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 15
[2020-10-14 01:16:01,140 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:01,140 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-10-14 01:16:01,141 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:01,142 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:01,142 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:01,143 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:16:01,143 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:16:01,143 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:16:02,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 32 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:16:02,263 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737051140]
[2020-10-14 01:16:02,264 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:16:02,264 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:16:02,264 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994879971]
[2020-10-14 01:16:02,267 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:16:02,267 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:16:02,267 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:16:02,268 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:16:02,268 INFO  L87              Difference]: Start difference. First operand 15300 states and 19872 transitions. Second operand 7 states.
[2020-10-14 01:16:40,279 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:16:40,279 INFO  L93              Difference]: Finished difference Result 55417 states and 78243 transitions.
[2020-10-14 01:16:40,282 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:16:40,282 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1707
[2020-10-14 01:16:40,282 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:16:40,412 INFO  L225             Difference]: With dead ends: 55417
[2020-10-14 01:16:40,412 INFO  L226             Difference]: Without dead ends: 40123
[2020-10-14 01:16:40,459 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:16:40,502 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40123 states.
[2020-10-14 01:16:41,236 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40123 to 39908.
[2020-10-14 01:16:41,236 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 39908 states.
[2020-10-14 01:16:41,338 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39908 states to 39908 states and 50816 transitions.
[2020-10-14 01:16:41,339 INFO  L78                 Accepts]: Start accepts. Automaton has 39908 states and 50816 transitions. Word has length 1707
[2020-10-14 01:16:41,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:16:41,340 INFO  L479      AbstractCegarLoop]: Abstraction has 39908 states and 50816 transitions.
[2020-10-14 01:16:41,340 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:16:41,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 39908 states and 50816 transitions.
[2020-10-14 01:16:41,495 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1719
[2020-10-14 01:16:41,495 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:16:41,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-14 01:16:41,497 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:16:41,498 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:16:41,498 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:16:41,499 INFO  L82        PathProgramCache]: Analyzing trace with hash -496475767, now seen corresponding path program 1 times
[2020-10-14 01:16:41,499 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:16:41,499 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895546270]
[2020-10-14 01:16:41,500 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:16:41,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:41,645 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:43,315 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:46,719 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:46,719 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1742
[2020-10-14 01:16:46,720 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:16:46,720 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5101
[2020-10-14 01:16:46,720 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:46,720 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:46,720 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:16:46,721 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:16:46,721 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 43
[2020-10-14 01:16:46,721 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:46,986 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:16:46,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:46,990 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:46,994 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:46,994 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:16:46,994 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:46,994 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 01:16:46,994 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:46,995 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:46,995 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:16:46,995 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:16:46,995 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:16:46,995 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:47,017 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:16:47,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:47,029 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:47,065 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:47,065 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 38
[2020-10-14 01:16:47,065 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:16:47,065 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-10-14 01:16:47,066 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:47,066 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:47,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:47,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:16:47,066 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-14 01:16:47,066 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:16:48,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:16:48,122 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895546270]
[2020-10-14 01:16:48,122 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:16:48,122 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:16:48,123 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694867383]
[2020-10-14 01:16:48,125 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:16:48,125 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:16:48,125 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:16:48,125 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:16:48,126 INFO  L87              Difference]: Start difference. First operand 39908 states and 50816 transitions. Second operand 7 states.
[2020-10-14 01:17:13,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:17:13,895 INFO  L93              Difference]: Finished difference Result 81902 states and 108495 transitions.
[2020-10-14 01:17:13,896 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:17:13,896 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1718
[2020-10-14 01:17:13,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:17:14,017 INFO  L225             Difference]: With dead ends: 81902
[2020-10-14 01:17:14,017 INFO  L226             Difference]: Without dead ends: 42008
[2020-10-14 01:17:14,095 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:17:14,144 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 42008 states.
[2020-10-14 01:17:14,760 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 42008 to 41877.
[2020-10-14 01:17:14,761 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 41877 states.
[2020-10-14 01:17:15,124 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41877 states to 41877 states and 52569 transitions.
[2020-10-14 01:17:15,125 INFO  L78                 Accepts]: Start accepts. Automaton has 41877 states and 52569 transitions. Word has length 1718
[2020-10-14 01:17:15,126 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:17:15,126 INFO  L479      AbstractCegarLoop]: Abstraction has 41877 states and 52569 transitions.
[2020-10-14 01:17:15,126 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:17:15,126 INFO  L276                IsEmpty]: Start isEmpty. Operand 41877 states and 52569 transitions.
[2020-10-14 01:17:15,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1736
[2020-10-14 01:17:15,249 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:17:15,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2020-10-14 01:17:15,251 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:17:15,251 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:17:15,252 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:17:15,253 INFO  L82        PathProgramCache]: Analyzing trace with hash -264487931, now seen corresponding path program 1 times
[2020-10-14 01:17:15,253 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:17:15,253 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639243421]
[2020-10-14 01:17:15,254 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:17:15,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:15,436 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:17,309 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:20,582 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:20,582 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1759
[2020-10-14 01:17:20,582 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:17:20,582 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5183
[2020-10-14 01:17:20,582 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:20,583 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:20,583 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:17:20,583 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:17:20,583 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 60
[2020-10-14 01:17:20,583 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:17:21,095 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:17:21,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:21,103 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:21,112 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:21,113 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:17:21,113 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:21,113 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-14 01:17:21,114 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:21,114 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:21,114 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:17:21,114 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:17:21,115 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:17:21,115 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:21,140 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:17:21,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:17:21,179 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:17:21,308 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:17:21,309 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 55
[2020-10-14 01:17:21,309 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:17:21,310 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 148
[2020-10-14 01:17:21,310 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:17:21,310 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:17:21,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:17:21,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:17:21,311 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 55
[2020-10-14 01:17:21,312 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:17:22,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:17:22,731 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639243421]
[2020-10-14 01:17:22,731 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:17:22,732 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:17:22,732 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310532976]
[2020-10-14 01:17:22,733 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:17:22,734 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:17:22,734 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:17:22,734 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:17:22,734 INFO  L87              Difference]: Start difference. First operand 41877 states and 52569 transitions. Second operand 7 states.