/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_label34.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:21:24,206 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:21:24,209 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:21:24,249 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:21:24,250 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:21:24,251 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:21:24,252 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:21:24,254 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:21:24,255 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:21:24,256 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-14 01:21:24,258 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:21:24,258 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:21:24,261 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:21:24,262 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:21:24,263 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:21:24,263 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:21:24,264 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:21:24,266 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:21:24,268 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:21:24,269 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:21:24,270 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:21:24,271 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:21:24,271 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:21:24,274 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:21:24,274 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:21:24,274 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:21:24,275 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:21:24,275 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:21:24,276 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:21:24,276 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:21:24,277 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:21:24,278 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:21:24,278 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:21:24,279 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:21:24,279 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:21:24,280 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:21:24,280 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:21:24,280 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:21:24,281 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:21:24,282 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:21:24,283 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 01:21:24,304 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:21:24,304 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:21:24,305 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:21:24,305 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:21:24,306 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:21:24,306 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:21:24,306 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:21:24,306 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:21:24,307 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:21:24,307 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:21:24,307 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:21:24,307 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:21:24,307 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:21:24,307 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:21:24,308 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:21:24,308 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:21:24,308 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:21:24,308 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:21:24,308 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:21:24,309 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:21:24,309 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:21:24,309 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:21:24,309 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:21:24,309 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:21:24,310 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:21:24,310 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:21:24,310 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:21:24,310 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:21:24,310 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:21:24,311 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 01:21:24,619 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:21:24,638 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:21:24,648 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:21:24,651 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:21:24,652 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:21:24,653 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label34.c
[2020-10-14 01:21:24,719 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e704980d/e0bf635ef0b9467ea0c71eb359e69439/FLAGd5ed93b0c
[2020-10-14 01:21:25,631 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:21:25,632 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label34.c
[2020-10-14 01:21:25,682 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e704980d/e0bf635ef0b9467ea0c71eb359e69439/FLAGd5ed93b0c
[2020-10-14 01:21:25,970 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e704980d/e0bf635ef0b9467ea0c71eb359e69439
[2020-10-14 01:21:25,979 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:21:25,981 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:21:25,983 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:21:25,983 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:21:25,987 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:21:25,988 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:21:25" (1/1) ...
[2020-10-14 01:21:25,992 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2278f003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:25, skipping insertion in model container
[2020-10-14 01:21:25,992 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:21:25" (1/1) ...
[2020-10-14 01:21:26,001 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:21:26,301 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:21:29,009 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:21:29,017 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:21:30,548 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:21:30,620 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:21:30,621 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30 WrapperNode
[2020-10-14 01:21:30,621 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:21:30,622 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:21:30,622 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:21:30,622 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:21:30,637 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (1/1) ...
[2020-10-14 01:21:30,638 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (1/1) ...
[2020-10-14 01:21:30,723 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (1/1) ...
[2020-10-14 01:21:30,724 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (1/1) ...
[2020-10-14 01:21:30,921 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (1/1) ...
[2020-10-14 01:21:31,004 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (1/1) ...
[2020-10-14 01:21:31,059 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (1/1) ...
[2020-10-14 01:21:31,271 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:21:31,272 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:21:31,272 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:21:31,272 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:21:31,273 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:21:31,342 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:21:31,342 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:21:31,343 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:21:31,343 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:21:31,343 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:21:31,343 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:21:31,343 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:21:31,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:21:31,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:21:31,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:21:31,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:21:31,344 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:21:31,344 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:21:31,345 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:21:31,345 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:21:31,345 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:21:31,345 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:21:31,345 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:21:31,346 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:21:31,346 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:21:31,346 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:21:31,346 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:21:31,346 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:21:31,347 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:21:31,347 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:21:39,721 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:21:39,722 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:21:39,742 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:21:39 BoogieIcfgContainer
[2020-10-14 01:21:39,742 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:21:39,744 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:21:39,744 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:21:39,747 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:21:39,747 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:21:25" (1/3) ...
[2020-10-14 01:21:39,748 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35212a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:21:39, skipping insertion in model container
[2020-10-14 01:21:39,748 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:21:30" (2/3) ...
[2020-10-14 01:21:39,749 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35212a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:21:39, skipping insertion in model container
[2020-10-14 01:21:39,749 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:21:39" (3/3) ...
[2020-10-14 01:21:39,751 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label34.c
[2020-10-14 01:21:39,762 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:21:39,772 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:21:39,786 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:21:39,822 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:21:39,822 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:21:39,822 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:21:39,822 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:21:39,822 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:21:39,823 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:21:39,823 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:21:39,823 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:21:39,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:21:39,976 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1704
[2020-10-14 01:21:39,977 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:39,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:21:39,980 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:39,985 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:39,987 INFO  L82        PathProgramCache]: Analyzing trace with hash 1441423152, now seen corresponding path program 1 times
[2020-10-14 01:21:39,994 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:39,995 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128284422]
[2020-10-14 01:21:39,996 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:41,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:41,518 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:46,338 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:46,339 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1725
[2020-10-14 01:21:46,339 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:46,339 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5269
[2020-10-14 01:21:46,342 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:46,342 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:46,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:21:46,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:21:46,343 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1719
[2020-10-14 01:21:46,343 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:21:48,018 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:48,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:48,028 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:48,043 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:48,043 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:48,043 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:48,044 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-14 01:21:48,044 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:48,044 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:48,044 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:48,044 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:48,045 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:21:48,045 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:50,219 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 01:21:50,219 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128284422]
[2020-10-14 01:21:50,221 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:21:50,221 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:21:50,222 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658503222]
[2020-10-14 01:21:50,231 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:21:50,232 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:50,242 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:21:50,242 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:21:50,244 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:22:06,633 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:22:06,634 INFO  L93              Difference]: Finished difference Result 6310 states and 11850 transitions.
[2020-10-14 01:22:06,638 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:22:06,640 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1703
[2020-10-14 01:22:06,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:22:06,693 INFO  L225             Difference]: With dead ends: 6310
[2020-10-14 01:22:06,693 INFO  L226             Difference]: Without dead ends: 4024
[2020-10-14 01:22:06,705 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:22:06,731 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4024 states.
[2020-10-14 01:22:06,886 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997.
[2020-10-14 01:22:06,887 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-14 01:22:06,906 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions.
[2020-10-14 01:22:06,908 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1703
[2020-10-14 01:22:06,912 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:22:06,912 INFO  L479      AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions.
[2020-10-14 01:22:06,912 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:22:06,913 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions.
[2020-10-14 01:22:07,083 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1713
[2020-10-14 01:22:07,084 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:22:07,085 INFO  L422         BasicCegarLoop]: trace histogram [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, 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]
[2020-10-14 01:22:07,086 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:22:07,086 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:22:07,086 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:22:07,088 INFO  L82        PathProgramCache]: Analyzing trace with hash -714607397, now seen corresponding path program 1 times
[2020-10-14 01:22:07,088 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:22:07,088 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106095744]
[2020-10-14 01:22:07,089 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:22:07,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:07,251 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:09,569 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:12,322 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:12,323 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1736
[2020-10-14 01:22:12,327 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:22:12,327 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5096
[2020-10-14 01:22:12,328 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:12,328 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:12,328 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:22:12,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:22:12,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:22:12,329 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:22:13,398 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:22:13,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:13,405 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:13,412 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:13,413 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:22:13,413 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:13,413 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:22:13,413 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:13,414 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:13,414 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:22:13,414 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:22:13,414 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:22:13,415 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:13,440 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:22:13,443 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:13,447 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:13,467 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:13,467 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:22:13,468 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:13,468 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-14 01:22:13,468 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:13,468 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:13,468 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:22:13,469 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:22:13,469 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:22:13,469 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:14,735 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:22:14,735 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106095744]
[2020-10-14 01:22:14,735 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:22:14,736 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:22:14,736 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682337594]
[2020-10-14 01:22:14,740 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:22:14,740 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:22:14,740 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:22:14,741 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:22:14,741 INFO  L87              Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 7 states.
[2020-10-14 01:22:35,624 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:22:35,625 INFO  L93              Difference]: Finished difference Result 11644 states and 18922 transitions.
[2020-10-14 01:22:35,630 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-14 01:22:35,630 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1712
[2020-10-14 01:22:35,631 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:22:35,669 INFO  L225             Difference]: With dead ends: 11644
[2020-10-14 01:22:35,669 INFO  L226             Difference]: Without dead ends: 7653
[2020-10-14 01:22:35,680 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-14 01:22:35,690 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7653 states.
[2020-10-14 01:22:35,845 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7653 to 7628.
[2020-10-14 01:22:35,845 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7628 states.
[2020-10-14 01:22:35,870 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7628 states to 7628 states and 11185 transitions.
[2020-10-14 01:22:35,870 INFO  L78                 Accepts]: Start accepts. Automaton has 7628 states and 11185 transitions. Word has length 1712
[2020-10-14 01:22:35,871 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:22:35,871 INFO  L479      AbstractCegarLoop]: Abstraction has 7628 states and 11185 transitions.
[2020-10-14 01:22:35,871 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:22:35,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 7628 states and 11185 transitions.
[2020-10-14 01:22:36,006 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1715
[2020-10-14 01:22:36,006 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:22:36,008 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, 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 01:22:36,008 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:22:36,008 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:22:36,009 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:22:36,010 INFO  L82        PathProgramCache]: Analyzing trace with hash -1082517121, now seen corresponding path program 1 times
[2020-10-14 01:22:36,010 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:22:36,010 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592067921]
[2020-10-14 01:22:36,011 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:22:36,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:36,730 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:37,344 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:41,551 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:41,552 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1738
[2020-10-14 01:22:41,552 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:22:41,552 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5120
[2020-10-14 01:22:41,552 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:41,553 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:41,553 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:22:41,553 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:22:41,553 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:22:41,553 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:41,967 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:22:41,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:41,972 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:41,977 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:41,977 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:22:41,977 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:41,978 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:22:41,978 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:41,978 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:41,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:22:41,978 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:22:41,979 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:22:41,979 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:42,000 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:22:42,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:22:42,008 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:22:42,030 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:22:42,031 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 01:22:42,031 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:22:42,031 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-10-14 01:22:42,032 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:22:42,032 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:22:42,032 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:22:42,032 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:22:42,032 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-14 01:22:42,033 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:22:43,119 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 01:22:43,120 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592067921]
[2020-10-14 01:22:43,120 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:22:43,120 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:22:43,120 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093988985]
[2020-10-14 01:22:43,122 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:22:43,123 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:22:43,123 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:22:43,123 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:22:43,124 INFO  L87              Difference]: Start difference. First operand 7628 states and 11185 transitions. Second operand 7 states.
[2020-10-14 01:23:04,164 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:23:04,165 INFO  L93              Difference]: Finished difference Result 19465 states and 28775 transitions.
[2020-10-14 01:23:04,166 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:23:04,166 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1714
[2020-10-14 01:23:04,166 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:23:04,222 INFO  L225             Difference]: With dead ends: 19465
[2020-10-14 01:23:04,222 INFO  L226             Difference]: Without dead ends: 11843
[2020-10-14 01:23:04,242 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:23:04,256 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11843 states.
[2020-10-14 01:23:04,547 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 11404.
[2020-10-14 01:23:04,547 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11404 states.
[2020-10-14 01:23:04,570 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11404 states to 11404 states and 15644 transitions.
[2020-10-14 01:23:04,571 INFO  L78                 Accepts]: Start accepts. Automaton has 11404 states and 15644 transitions. Word has length 1714
[2020-10-14 01:23:04,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:23:04,572 INFO  L479      AbstractCegarLoop]: Abstraction has 11404 states and 15644 transitions.
[2020-10-14 01:23:04,572 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:23:04,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 11404 states and 15644 transitions.
[2020-10-14 01:23:04,629 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1726
[2020-10-14 01:23:04,630 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:23:04,631 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, 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 01:23:04,632 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:23:04,632 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:23:04,632 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:23:04,633 INFO  L82        PathProgramCache]: Analyzing trace with hash 1041201967, now seen corresponding path program 1 times
[2020-10-14 01:23:04,633 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:23:04,633 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656325521]
[2020-10-14 01:23:04,634 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:23:04,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:05,191 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:05,726 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:10,193 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:10,193 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1749
[2020-10-14 01:23:10,193 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:23:10,194 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5215
[2020-10-14 01:23:10,194 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:10,194 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:10,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:23:10,194 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:23:10,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-14 01:23:10,195 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:10,585 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:23:10,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:10,589 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:10,594 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:10,594 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:23:10,595 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:10,595 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:23:10,595 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:10,595 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:10,595 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:23:10,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:10,596 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:23:10,596 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:10,614 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:23:10,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:10,625 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:10,662 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:10,662 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:23:10,662 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:10,663 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 41
[2020-10-14 01:23:10,663 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:10,663 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:10,663 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:23:10,663 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:23:10,664 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-14 01:23:10,664 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:11,911 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 01:23:11,912 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656325521]
[2020-10-14 01:23:11,912 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:23:11,913 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:23:11,913 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180970756]
[2020-10-14 01:23:11,915 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:23:11,916 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:23:11,917 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:23:11,919 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:23:11,920 INFO  L87              Difference]: Start difference. First operand 11404 states and 15644 transitions. Second operand 7 states.
[2020-10-14 01:23:37,256 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:23:37,257 INFO  L93              Difference]: Finished difference Result 34565 states and 49400 transitions.
[2020-10-14 01:23:37,258 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:23:37,259 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1725
[2020-10-14 01:23:37,259 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:23:37,358 INFO  L225             Difference]: With dead ends: 34565
[2020-10-14 01:23:37,358 INFO  L226             Difference]: Without dead ends: 23167
[2020-10-14 01:23:37,386 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:23:37,410 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23167 states.
[2020-10-14 01:23:37,848 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23167 to 22971.
[2020-10-14 01:23:37,848 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22971 states.
[2020-10-14 01:23:37,907 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22971 states to 22971 states and 30280 transitions.
[2020-10-14 01:23:37,907 INFO  L78                 Accepts]: Start accepts. Automaton has 22971 states and 30280 transitions. Word has length 1725
[2020-10-14 01:23:37,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:23:37,908 INFO  L479      AbstractCegarLoop]: Abstraction has 22971 states and 30280 transitions.
[2020-10-14 01:23:37,908 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:23:37,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 22971 states and 30280 transitions.
[2020-10-14 01:23:38,022 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1781
[2020-10-14 01:23:38,022 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:23:38,025 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, 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, 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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]
[2020-10-14 01:23:38,025 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:23:38,025 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:23:38,026 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:23:38,027 INFO  L82        PathProgramCache]: Analyzing trace with hash 1300502182, now seen corresponding path program 1 times
[2020-10-14 01:23:38,027 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:23:38,027 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545238156]
[2020-10-14 01:23:38,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:23:38,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:38,691 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:39,383 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:43,507 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:43,507 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1804
[2020-10-14 01:23:43,507 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:23:43,508 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5073
[2020-10-14 01:23:43,508 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:43,508 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:43,508 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:23:43,508 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:23:43,508 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 83
[2020-10-14 01:23:43,508 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:23:43,835 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:23:43,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:43,839 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:43,843 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:43,844 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:23:43,844 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:43,844 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 01:23:43,844 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:43,844 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:43,845 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:23:43,845 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:23:43,845 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:23:43,845 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:43,872 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:23:43,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:23:43,903 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:23:44,014 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:23:44,015 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-10-14 01:23:44,015 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:23:44,015 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 124
[2020-10-14 01:23:44,015 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:23:44,016 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:23:44,016 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:23:44,016 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:23:44,016 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 78
[2020-10-14 01:23:44,016 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:23:45,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 74 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:23:45,812 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545238156]
[2020-10-14 01:23:45,812 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:23:45,812 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:23:45,812 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917942556]
[2020-10-14 01:23:45,814 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:23:45,814 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:23:45,814 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:23:45,814 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:23:45,814 INFO  L87              Difference]: Start difference. First operand 22971 states and 30280 transitions. Second operand 7 states.
[2020-10-14 01:24:06,990 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:24:06,990 INFO  L93              Difference]: Finished difference Result 61212 states and 81207 transitions.
[2020-10-14 01:24:06,993 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:24:06,994 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1780
[2020-10-14 01:24:06,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:24:07,089 INFO  L225             Difference]: With dead ends: 61212
[2020-10-14 01:24:07,090 INFO  L226             Difference]: Without dead ends: 38247
[2020-10-14 01:24:07,156 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 01:24:07,199 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38247 states.
[2020-10-14 01:24:07,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38247 to 37736.
[2020-10-14 01:24:07,783 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 37736 states.
[2020-10-14 01:24:07,859 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37736 states to 37736 states and 47921 transitions.
[2020-10-14 01:24:07,860 INFO  L78                 Accepts]: Start accepts. Automaton has 37736 states and 47921 transitions. Word has length 1780
[2020-10-14 01:24:07,860 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:24:07,860 INFO  L479      AbstractCegarLoop]: Abstraction has 37736 states and 47921 transitions.
[2020-10-14 01:24:07,860 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:24:07,861 INFO  L276                IsEmpty]: Start isEmpty. Operand 37736 states and 47921 transitions.
[2020-10-14 01:24:07,972 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1839
[2020-10-14 01:24:07,972 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:24:07,974 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, 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, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:24:07,974 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:24:07,974 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:24:07,975 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:24:07,975 INFO  L82        PathProgramCache]: Analyzing trace with hash -1230188656, now seen corresponding path program 1 times
[2020-10-14 01:24:07,976 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:24:07,976 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885882801]
[2020-10-14 01:24:07,976 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:24:08,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:24:08,826 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:09,631 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:10,269 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:13,532 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:24:13,533 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1864
[2020-10-14 01:24:13,533 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:24:13,533 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5086
[2020-10-14 01:24:13,533 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:24:13,534 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:24:13,534 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:24:13,534 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 123
[2020-10-14 01:24:13,534 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 25
[2020-10-14 01:24:13,534 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:24:13,839 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:24:13,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:24:13,842 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:13,844 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:24:13,844 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:24:13,845 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:24:13,845 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:24:13,845 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:24:13,845 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:24:13,845 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:24:13,846 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:24:13,846 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:24:13,846 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:24:13,865 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:24:13,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:24:13,903 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:13,960 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:24:13,960 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-14 01:24:13,960 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:24:13,961 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 73
[2020-10-14 01:24:13,961 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:24:13,961 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:24:13,961 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:24:13,961 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:24:13,961 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-10-14 01:24:13,961 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:24:13,990 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-14 01:24:13,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:24:13,998 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:14,019 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:24:14,019 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:24:14,019 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:24:14,019 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-14 01:24:14,020 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:24:14,020 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:24:14,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:24:14,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:24:14,020 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-14 01:24:14,020 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:24:15,150 INFO  L134       CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:24:15,151 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885882801]
[2020-10-14 01:24:15,152 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:24:15,152 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:24:15,153 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502802233]
[2020-10-14 01:24:15,154 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:24:15,155 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:24:15,155 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:24:15,155 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:24:15,155 INFO  L87              Difference]: Start difference. First operand 37736 states and 47921 transitions. Second operand 7 states.
[2020-10-14 01:24:40,961 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:24:40,962 INFO  L93              Difference]: Finished difference Result 95569 states and 130355 transitions.
[2020-10-14 01:24:40,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-14 01:24:40,965 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1838
[2020-10-14 01:24:40,966 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:24:41,149 INFO  L225             Difference]: With dead ends: 95569
[2020-10-14 01:24:41,149 INFO  L226             Difference]: Without dead ends: 57839
[2020-10-14 01:24:41,200 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:24:41,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57839 states.
[2020-10-14 01:24:42,175 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57839 to 55279.
[2020-10-14 01:24:42,176 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 55279 states.
[2020-10-14 01:24:42,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55279 states to 55279 states and 71020 transitions.
[2020-10-14 01:24:42,280 INFO  L78                 Accepts]: Start accepts. Automaton has 55279 states and 71020 transitions. Word has length 1838
[2020-10-14 01:24:42,280 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:24:42,280 INFO  L479      AbstractCegarLoop]: Abstraction has 55279 states and 71020 transitions.
[2020-10-14 01:24:42,281 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:24:42,281 INFO  L276                IsEmpty]: Start isEmpty. Operand 55279 states and 71020 transitions.
[2020-10-14 01:24:42,417 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1857
[2020-10-14 01:24:42,417 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:24:42,419 INFO  L422         BasicCegarLoop]: trace histogram [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, 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, 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, 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[2020-10-14 01:24:42,419 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-14 01:24:42,419 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:24:42,419 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:24:42,420 INFO  L82        PathProgramCache]: Analyzing trace with hash 158815714, now seen corresponding path program 1 times
[2020-10-14 01:24:42,421 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:24:42,421 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559493095]
[2020-10-14 01:24:42,421 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:24:42,753 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:24:42,961 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:44,104 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:47,777 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:24:47,777 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1882
[2020-10-14 01:24:47,777 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:24:47,778 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5019
[2020-10-14 01:24:47,778 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:24:47,778 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:24:47,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 01:24:47,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 165
[2020-10-14 01:24:47,779 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1716
[2020-10-14 01:24:47,780 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:24:48,535 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:24:48,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:24:48,539 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:48,542 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:24:48,542 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:24:48,542 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:24:48,542 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 01:24:48,542 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:24:48,542 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:24:48,543 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:24:48,543 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:24:48,543 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:24:48,543 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:24:48,560 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:24:48,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:24:48,568 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:48,588 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:24:48,588 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-14 01:24:48,588 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:24:48,589 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 21
[2020-10-14 01:24:48,589 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:24:48,589 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:24:48,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:24:48,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:24:48,589 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:24:48,589 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:24:48,609 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-14 01:24:48,615 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:24:48,620 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:24:48,641 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:24:48,641 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:24:48,641 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:24:48,642 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-10-14 01:24:48,642 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:24:48,642 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:24:48,642 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:24:48,642 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:24:48,642 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-14 01:24:48,642 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:24:50,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2020-10-14 01:24:50,935 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559493095]
[2020-10-14 01:24:50,935 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:24:50,936 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 01:24:50,936 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947937710]
[2020-10-14 01:24:50,941 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 01:24:50,941 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:24:50,941 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 01:24:50,941 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:24:50,941 INFO  L87              Difference]: Start difference. First operand 55279 states and 71020 transitions. Second operand 5 states.