/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label13.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 19:37:28,200 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 19:37:28,203 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 19:37:28,227 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 19:37:28,228 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 19:37:28,229 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 19:37:28,230 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 19:37:28,232 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 19:37:28,234 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 19:37:28,235 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 19:37:28,236 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 19:37:28,237 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 19:37:28,238 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 19:37:28,239 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 19:37:28,240 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 19:37:28,241 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 19:37:28,242 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 19:37:28,248 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 19:37:28,250 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 19:37:28,252 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 19:37:28,254 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 19:37:28,257 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 19:37:28,258 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 19:37:28,259 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 19:37:28,264 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 19:37:28,264 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 19:37:28,265 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 19:37:28,266 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 19:37:28,267 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 19:37:28,268 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 19:37:28,269 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 19:37:28,270 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 19:37:28,270 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 19:37:28,271 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 19:37:28,274 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 19:37:28,274 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 19:37:28,275 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 19:37:28,275 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 19:37:28,275 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 19:37:28,277 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 19:37:28,278 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 19:37:28,279 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 19:37:28,335 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 19:37:28,335 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 19:37:28,337 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 19:37:28,338 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 19:37:28,341 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 19:37:28,341 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 19:37:28,342 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 19:37:28,342 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 19:37:28,342 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 19:37:28,342 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 19:37:28,342 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 19:37:28,343 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 19:37:28,343 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 19:37:28,343 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 19:37:28,343 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 19:37:28,343 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 19:37:28,343 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 19:37:28,344 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 19:37:28,346 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 19:37:28,346 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 19:37:28,346 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 19:37:28,347 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 19:37:28,347 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 19:37:28,347 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 19:37:28,347 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 19:37:28,348 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 19:37:28,348 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 19:37:28,348 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 19:37:28,351 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 19:37:28,351 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true;
[2020-10-14 19:37:28,669 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 19:37:28,685 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 19:37:28,688 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 19:37:28,690 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 19:37:28,692 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 19:37:28,692 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label13.c
[2020-10-14 19:37:28,761 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b45e730/2e7b53919a654030a3b7b4011d676b18/FLAG4b43f800f
[2020-10-14 19:37:29,810 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 19:37:29,811 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label13.c
[2020-10-14 19:37:29,878 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b45e730/2e7b53919a654030a3b7b4011d676b18/FLAG4b43f800f
[2020-10-14 19:37:30,119 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59b45e730/2e7b53919a654030a3b7b4011d676b18
[2020-10-14 19:37:30,132 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 19:37:30,134 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 19:37:30,137 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 19:37:30,138 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 19:37:30,141 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 19:37:30,143 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:30" (1/1) ...
[2020-10-14 19:37:30,147 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d2007e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:30, skipping insertion in model container
[2020-10-14 19:37:30,147 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:37:30" (1/1) ...
[2020-10-14 19:37:30,156 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 19:37:30,433 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 19:37:33,493 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 19:37:33,505 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 19:37:35,189 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 19:37:35,291 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 19:37:35,293 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35 WrapperNode
[2020-10-14 19:37:35,293 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 19:37:35,294 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 19:37:35,294 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 19:37:35,294 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 19:37:35,310 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (1/1) ...
[2020-10-14 19:37:35,313 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (1/1) ...
[2020-10-14 19:37:35,407 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (1/1) ...
[2020-10-14 19:37:35,407 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (1/1) ...
[2020-10-14 19:37:35,714 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (1/1) ...
[2020-10-14 19:37:35,763 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (1/1) ...
[2020-10-14 19:37:35,807 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (1/1) ...
[2020-10-14 19:37:35,861 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 19:37:35,862 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 19:37:35,862 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 19:37:35,863 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 19:37:35,864 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (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 19:37:35,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 19:37:35,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 19:37:35,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 19:37:35,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 19:37:35,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 19:37:35,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 19:37:35,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 19:37:35,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 19:37:35,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 19:37:35,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 19:37:35,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 19:37:35,956 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 19:37:35,956 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 19:37:35,956 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 19:37:35,956 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 19:37:35,957 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 19:37:35,957 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 19:37:35,957 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 19:37:35,957 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 19:37:35,958 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 19:37:35,958 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 19:37:35,958 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 19:37:35,958 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 19:37:35,958 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 19:37:35,958 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 19:37:44,326 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 19:37:44,327 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 19:37:44,343 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:44 BoogieIcfgContainer
[2020-10-14 19:37:44,344 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 19:37:44,345 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 19:37:44,346 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 19:37:44,349 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 19:37:44,349 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:37:30" (1/3) ...
[2020-10-14 19:37:44,350 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3748da7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:44, skipping insertion in model container
[2020-10-14 19:37:44,350 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:37:35" (2/3) ...
[2020-10-14 19:37:44,350 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3748da7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:37:44, skipping insertion in model container
[2020-10-14 19:37:44,351 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:37:44" (3/3) ...
[2020-10-14 19:37:44,353 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label13.c
[2020-10-14 19:37:44,363 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 19:37:44,373 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 19:37:44,387 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 19:37:44,419 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 19:37:44,419 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 19:37:44,419 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 19:37:44,420 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 19:37:44,420 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 19:37:44,420 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 19:37:44,420 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 19:37:44,420 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 19:37:44,476 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 19:37:44,646 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1659
[2020-10-14 19:37:44,647 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:37:44,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:37:44,650 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:37:44,657 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:37:44,659 INFO  L82        PathProgramCache]: Analyzing trace with hash -690348559, now seen corresponding path program 1 times
[2020-10-14 19:37:44,666 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:37:44,667 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045960957]
[2020-10-14 19:37:44,668 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:37:45,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:37:46,092 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:37:50,792 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:37:50,793 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1680
[2020-10-14 19:37:50,793 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:37:50,793 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5176
[2020-10-14 19:37:50,795 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:37:50,796 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:37:50,796 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 19:37:50,796 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 19:37:50,797 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1674
[2020-10-14 19:37:50,797 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 19:37:52,355 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:37:52,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:37:52,362 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:37:52,369 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:37:52,369 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:37:52,370 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:37:52,370 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-14 19:37:52,370 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:37:52,370 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:37:52,371 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:37:52,371 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:37:52,371 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 19:37:52,371 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:37:54,183 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 19:37:54,184 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045960957]
[2020-10-14 19:37:54,186 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 19:37:54,187 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 19:37:54,187 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789044866]
[2020-10-14 19:37:54,196 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 19:37:54,197 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:37:54,207 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 19:37:54,208 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 19:37:54,210 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 19:38:10,886 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:38:10,886 INFO  L93              Difference]: Finished difference Result 6310 states and 11850 transitions.
[2020-10-14 19:38:10,887 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 19:38:10,890 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1658
[2020-10-14 19:38:10,898 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:38:10,942 INFO  L225             Difference]: With dead ends: 6310
[2020-10-14 19:38:10,943 INFO  L226             Difference]: Without dead ends: 4024
[2020-10-14 19:38:10,956 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 19:38:10,980 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4024 states.
[2020-10-14 19:38:11,135 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4024 to 3997.
[2020-10-14 19:38:11,137 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-14 19:38:11,157 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6427 transitions.
[2020-10-14 19:38:11,159 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6427 transitions. Word has length 1658
[2020-10-14 19:38:11,166 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:38:11,166 INFO  L479      AbstractCegarLoop]: Abstraction has 3997 states and 6427 transitions.
[2020-10-14 19:38:11,166 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 19:38:11,166 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6427 transitions.
[2020-10-14 19:38:11,296 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1668
[2020-10-14 19:38:11,296 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:38:11,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:11,298 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 19:38:11,299 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:38:11,299 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:38:11,300 INFO  L82        PathProgramCache]: Analyzing trace with hash 1572520550, now seen corresponding path program 1 times
[2020-10-14 19:38:11,300 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:38:11,300 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974964072]
[2020-10-14 19:38:11,301 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:38:11,415 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:11,444 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:13,702 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:16,521 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:16,522 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1691
[2020-10-14 19:38:16,523 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:38:16,523 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5103
[2020-10-14 19:38:16,524 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:16,524 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:16,524 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 19:38:16,524 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-14 19:38:16,525 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1671
[2020-10-14 19:38:16,525 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:18,035 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:38:18,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:18,038 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:18,042 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:18,042 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:38:18,042 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:38:18,042 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 19:38:18,043 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:18,043 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:18,043 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:38:18,043 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:38:18,044 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:38:18,044 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:18,061 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:38:18,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:18,066 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:18,075 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:18,075 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 19:38:18,075 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:38:18,076 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-14 19:38:18,076 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:18,076 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:18,076 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:38:18,077 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:38:18,077 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-14 19:38:18,077 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:20,200 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:38:20,200 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974964072]
[2020-10-14 19:38:20,201 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:38:20,201 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-14 19:38:20,201 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327151661]
[2020-10-14 19:38:20,207 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-14 19:38:20,207 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:38:20,207 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-14 19:38:20,208 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-14 19:38:20,208 INFO  L87              Difference]: Start difference. First operand 3997 states and 6427 transitions. Second operand 6 states.
[2020-10-14 19:38:49,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:38:49,553 INFO  L93              Difference]: Finished difference Result 15248 states and 24990 transitions.
[2020-10-14 19:38:49,554 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-14 19:38:49,554 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1667
[2020-10-14 19:38:49,555 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:38:49,633 INFO  L225             Difference]: With dead ends: 15248
[2020-10-14 19:38:49,633 INFO  L226             Difference]: Without dead ends: 11257
[2020-10-14 19:38:49,646 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-14 19:38:49,661 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11257 states.
[2020-10-14 19:38:49,939 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 11123.
[2020-10-14 19:38:49,940 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11123 states.
[2020-10-14 19:38:49,980 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11123 states to 11123 states and 16397 transitions.
[2020-10-14 19:38:49,980 INFO  L78                 Accepts]: Start accepts. Automaton has 11123 states and 16397 transitions. Word has length 1667
[2020-10-14 19:38:49,981 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:38:49,981 INFO  L479      AbstractCegarLoop]: Abstraction has 11123 states and 16397 transitions.
[2020-10-14 19:38:49,981 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-14 19:38:49,981 INFO  L276                IsEmpty]: Start isEmpty. Operand 11123 states and 16397 transitions.
[2020-10-14 19:38:50,039 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1691
[2020-10-14 19:38:50,040 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:38:50,041 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:38:50,042 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 19:38:50,042 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:38:50,042 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:38:50,043 INFO  L82        PathProgramCache]: Analyzing trace with hash -419190826, now seen corresponding path program 1 times
[2020-10-14 19:38:50,043 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:38:50,043 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411024484]
[2020-10-14 19:38:50,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:38:50,196 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:50,254 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:50,607 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:55,315 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:55,316 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1716
[2020-10-14 19:38:55,316 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:38:55,316 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5116
[2020-10-14 19:38:55,317 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:55,317 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:55,317 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 19:38:55,317 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-14 19:38:55,318 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 24
[2020-10-14 19:38:55,318 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:55,839 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:38:55,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:55,842 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:55,844 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:55,845 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:38:55,845 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:38:55,845 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-14 19:38:55,846 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:55,846 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:55,846 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:38:55,846 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:38:55,846 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:38:55,847 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:55,864 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:38:55,867 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:55,869 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:55,879 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:55,879 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 19:38:55,879 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:38:55,879 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-14 19:38:55,880 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:55,880 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:55,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:38:55,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:38:55,880 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-14 19:38:55,881 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:55,885 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-14 19:38:55,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:38:55,894 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:38:55,927 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:38:55,927 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-14 19:38:55,927 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:38:55,927 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 36
[2020-10-14 19:38:55,928 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:38:55,928 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:38:55,928 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 19:38:55,928 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 19:38:55,929 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-10-14 19:38:55,929 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:38:56,992 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 19:38:56,992 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411024484]
[2020-10-14 19:38:56,992 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:38:56,993 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 19:38:56,993 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77909906]
[2020-10-14 19:38:56,995 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 19:38:56,996 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:38:56,996 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 19:38:56,996 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 19:38:56,997 INFO  L87              Difference]: Start difference. First operand 11123 states and 16397 transitions. Second operand 7 states.
[2020-10-14 19:39:22,161 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:39:22,161 INFO  L93              Difference]: Finished difference Result 27894 states and 42859 transitions.
[2020-10-14 19:39:22,162 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 19:39:22,162 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1690
[2020-10-14 19:39:22,163 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:39:22,231 INFO  L225             Difference]: With dead ends: 27894
[2020-10-14 19:39:22,232 INFO  L226             Difference]: Without dead ends: 16777
[2020-10-14 19:39:22,261 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 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 19:39:22,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16777 states.
[2020-10-14 19:39:22,634 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16777 to 16735.
[2020-10-14 19:39:22,634 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16735 states.
[2020-10-14 19:39:22,670 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16735 states to 16735 states and 23787 transitions.
[2020-10-14 19:39:22,679 INFO  L78                 Accepts]: Start accepts. Automaton has 16735 states and 23787 transitions. Word has length 1690
[2020-10-14 19:39:22,681 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:39:22,681 INFO  L479      AbstractCegarLoop]: Abstraction has 16735 states and 23787 transitions.
[2020-10-14 19:39:22,681 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 19:39:22,681 INFO  L276                IsEmpty]: Start isEmpty. Operand 16735 states and 23787 transitions.
[2020-10-14 19:39:22,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1697
[2020-10-14 19:39:22,759 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:39:22,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-14 19:39:22,760 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 19:39:22,761 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:39:22,761 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:39:22,762 INFO  L82        PathProgramCache]: Analyzing trace with hash -1458155957, now seen corresponding path program 1 times
[2020-10-14 19:39:22,762 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:39:22,763 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149895245]
[2020-10-14 19:39:22,763 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:39:22,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:39:22,930 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:24,563 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:25,231 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:27,098 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:27,907 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:39:27,908 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1720
[2020-10-14 19:39:27,908 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 19:39:27,908 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5010
[2020-10-14 19:39:27,908 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:39:27,908 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:39:27,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 19:39:27,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 46
[2020-10-14 19:39:27,909 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1673
[2020-10-14 19:39:27,909 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:39:28,805 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:39:28,807 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:39:28,808 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:28,814 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:39:28,815 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:39:28,815 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:39:28,815 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-10-14 19:39:28,816 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:39:28,816 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:39:28,816 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:39:28,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:39:28,817 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:39:28,817 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:39:28,840 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:39:28,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:39:28,854 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:28,873 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:39:28,908 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:39:28,908 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-14 19:39:28,909 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:39:28,910 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 59
[2020-10-14 19:39:28,911 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:39:28,911 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:39:28,911 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:39:28,911 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:39:28,911 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-14 19:39:28,912 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:39:31,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:39:31,624 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149895245]
[2020-10-14 19:39:31,624 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:39:31,625 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-14 19:39:31,625 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878699283]
[2020-10-14 19:39:31,627 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-14 19:39:31,627 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:39:31,627 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-14 19:39:31,628 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-14 19:39:31,628 INFO  L87              Difference]: Start difference. First operand 16735 states and 23787 transitions. Second operand 6 states.
[2020-10-14 19:40:00,935 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:40:00,936 INFO  L93              Difference]: Finished difference Result 65592 states and 99207 transitions.
[2020-10-14 19:40:00,937 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-14 19:40:00,937 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1696
[2020-10-14 19:40:00,940 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:40:01,119 INFO  L225             Difference]: With dead ends: 65592
[2020-10-14 19:40:01,120 INFO  L226             Difference]: Without dead ends: 48863
[2020-10-14 19:40:01,203 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-14 19:40:01,269 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48863 states.
[2020-10-14 19:40:02,436 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48863 to 48856.
[2020-10-14 19:40:02,437 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 48856 states.
[2020-10-14 19:40:02,567 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 48856 states to 48856 states and 66255 transitions.
[2020-10-14 19:40:02,568 INFO  L78                 Accepts]: Start accepts. Automaton has 48856 states and 66255 transitions. Word has length 1696
[2020-10-14 19:40:02,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:40:02,571 INFO  L479      AbstractCegarLoop]: Abstraction has 48856 states and 66255 transitions.
[2020-10-14 19:40:02,571 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-14 19:40:02,571 INFO  L276                IsEmpty]: Start isEmpty. Operand 48856 states and 66255 transitions.
[2020-10-14 19:40:02,771 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1720
[2020-10-14 19:40:02,771 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:40:02,774 INFO  L422         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-14 19:40:02,775 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 19:40:02,775 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:40:02,775 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:40:02,776 INFO  L82        PathProgramCache]: Analyzing trace with hash 1012509720, now seen corresponding path program 1 times
[2020-10-14 19:40:02,777 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:40:02,777 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219234364]
[2020-10-14 19:40:02,778 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:40:02,923 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:02,972 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:03,052 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:08,031 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:08,032 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1745
[2020-10-14 19:40:08,032 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:40:08,032 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5103
[2020-10-14 19:40:08,032 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:08,033 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:08,033 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 19:40:08,033 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 19:40:08,033 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-14 19:40:08,033 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:40:08,557 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:40:08,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:08,562 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:08,566 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:08,566 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:40:08,566 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:40:08,567 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 19:40:08,567 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:08,567 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:08,567 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:40:08,567 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:40:08,568 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 19:40:08,568 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:40:08,595 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:40:08,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:08,610 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:08,674 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:08,675 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 19:40:08,675 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:40:08,675 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 69
[2020-10-14 19:40:08,675 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:08,675 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:08,676 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 19:40:08,676 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 19:40:08,676 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-14 19:40:08,676 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:40:08,720 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-14 19:40:08,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:08,727 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:08,736 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:08,737 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-14 19:40:08,737 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:40:08,737 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-14 19:40:08,738 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:08,738 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:08,738 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:40:08,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-14 19:40:08,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:40:08,739 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:40:10,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 76 backedges. 55 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-14 19:40:10,053 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219234364]
[2020-10-14 19:40:10,053 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:40:10,053 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-14 19:40:10,053 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885283567]
[2020-10-14 19:40:10,056 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 19:40:10,056 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:40:10,056 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 19:40:10,057 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-14 19:40:10,057 INFO  L87              Difference]: Start difference. First operand 48856 states and 66255 transitions. Second operand 8 states.
[2020-10-14 19:40:47,353 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 19:40:47,353 INFO  L93              Difference]: Finished difference Result 193795 states and 294265 transitions.
[2020-10-14 19:40:47,355 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-14 19:40:47,355 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1719
[2020-10-14 19:40:47,356 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 19:40:48,243 INFO  L225             Difference]: With dead ends: 193795
[2020-10-14 19:40:48,243 INFO  L226             Difference]: Without dead ends: 144945
[2020-10-14 19:40:48,346 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-14 19:40:48,477 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 144945 states.
[2020-10-14 19:40:51,267 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 144945 to 144724.
[2020-10-14 19:40:51,267 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 144724 states.
[2020-10-14 19:40:51,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 144724 states to 144724 states and 210054 transitions.
[2020-10-14 19:40:51,618 INFO  L78                 Accepts]: Start accepts. Automaton has 144724 states and 210054 transitions. Word has length 1719
[2020-10-14 19:40:51,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 19:40:51,619 INFO  L479      AbstractCegarLoop]: Abstraction has 144724 states and 210054 transitions.
[2020-10-14 19:40:51,619 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 19:40:51,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 144724 states and 210054 transitions.
[2020-10-14 19:40:52,199 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1736
[2020-10-14 19:40:52,199 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 19:40:52,201 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]
[2020-10-14 19:40:52,201 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 19:40:52,201 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 19:40:52,202 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 19:40:52,202 INFO  L82        PathProgramCache]: Analyzing trace with hash -2036128069, now seen corresponding path program 1 times
[2020-10-14 19:40:52,203 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 19:40:52,203 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404649843]
[2020-10-14 19:40:52,203 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 19:40:52,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:52,733 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:53,152 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:57,506 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:57,506 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1759
[2020-10-14 19:40:57,506 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 19:40:57,506 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5039
[2020-10-14 19:40:57,506 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:57,507 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:57,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-14 19:40:57,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 87
[2020-10-14 19:40:57,507 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1671
[2020-10-14 19:40:57,507 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 19:40:58,904 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 19:40:58,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:58,908 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:58,911 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:58,911 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 19:40:58,911 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:40:58,912 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 19:40:58,912 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:58,912 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:58,913 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 19:40:58,913 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:40:58,913 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 19:40:58,913 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:40:58,945 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 19:40:58,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 19:40:58,983 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 19:40:59,067 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 19:40:59,068 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 78
[2020-10-14 19:40:59,068 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 19:40:59,068 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 97
[2020-10-14 19:40:59,069 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-14 19:40:59,069 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.2
[2020-10-14 19:40:59,070 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 19:40:59,070 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 19:40:59,070 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 72
[2020-10-14 19:40:59,070 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 19:41:01,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 74 backedges. 73 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 19:41:01,638 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404649843]
[2020-10-14 19:41:01,638 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 19:41:01,639 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-14 19:41:01,639 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998170341]
[2020-10-14 19:41:01,640 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 19:41:01,641 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 19:41:01,641 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 19:41:01,641 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 19:41:01,641 INFO  L87              Difference]: Start difference. First operand 144724 states and 210054 transitions. Second operand 5 states.