/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_label22.c


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


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:18:20,062 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:18:20,065 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:18:20,107 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:18:20,107 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:18:20,118 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:18:20,120 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:18:20,124 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:18:20,128 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:18:20,129 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:18:20,132 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:18:20,133 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:18:20,133 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:18:20,137 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:18:20,139 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:18:20,140 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:18:20,143 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:18:20,144 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:18:20,145 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:18:20,152 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:18:20,153 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:18:20,155 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:18:20,157 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:18:20,157 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:18:20,162 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:18:20,162 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:18:20,163 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:18:20,166 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:18:20,166 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:18:20,167 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:18:20,167 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:18:20,168 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:18:20,169 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:18:20,170 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:18:20,171 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:18:20,171 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:18:20,172 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:18:20,172 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:18:20,172 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:18:20,173 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:18:20,175 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:18:20,176 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 01:18:20,220 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:18:20,221 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:18:20,222 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:18:20,223 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:18:20,223 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:18:20,223 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:18:20,224 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:18:20,224 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:18:20,224 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:18:20,224 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:18:20,225 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:18:20,226 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:18:20,226 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:18:20,226 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:18:20,227 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:18:20,227 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:18:20,227 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:18:20,227 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:18:20,227 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:18:20,228 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:18:20,228 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:18:20,228 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:18:20,228 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:18:20,228 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:18:20,229 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:18:20,229 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:18:20,229 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:18:20,229 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:18:20,229 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:18:20,230 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 01:18:20,516 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:18:20,528 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:18:20,532 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:18:20,533 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:18:20,534 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:18:20,535 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label22.c
[2020-10-14 01:18:20,614 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91b6421a5/fff50e016d1c45bd961e2e95fe84bc40/FLAG70bde1cde
[2020-10-14 01:18:21,510 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:18:21,511 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label22.c
[2020-10-14 01:18:21,554 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91b6421a5/fff50e016d1c45bd961e2e95fe84bc40/FLAG70bde1cde
[2020-10-14 01:18:21,945 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91b6421a5/fff50e016d1c45bd961e2e95fe84bc40
[2020-10-14 01:18:21,955 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:18:21,957 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:18:21,958 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:18:21,958 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:18:21,961 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:18:21,962 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:18:21" (1/1) ...
[2020-10-14 01:18:21,964 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29eb21d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:21, skipping insertion in model container
[2020-10-14 01:18:21,964 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:18:21" (1/1) ...
[2020-10-14 01:18:21,971 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:18:22,241 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:18:24,606 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:18:24,613 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:18:25,915 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:18:25,976 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:18:25,976 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25 WrapperNode
[2020-10-14 01:18:25,977 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:18:25,977 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:18:25,978 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:18:25,978 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:18:25,992 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (1/1) ...
[2020-10-14 01:18:25,993 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (1/1) ...
[2020-10-14 01:18:26,061 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (1/1) ...
[2020-10-14 01:18:26,061 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (1/1) ...
[2020-10-14 01:18:26,263 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (1/1) ...
[2020-10-14 01:18:26,312 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (1/1) ...
[2020-10-14 01:18:26,382 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (1/1) ...
[2020-10-14 01:18:26,441 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:18:26,442 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:18:26,442 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:18:26,442 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:18:26,444 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (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 01:18:26,525 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:18:26,526 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:18:26,526 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:18:26,526 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:18:26,526 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:18:26,526 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:18:26,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:18:26,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:18:26,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:18:26,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:18:26,527 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:18:26,528 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:18:26,528 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:18:26,528 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:18:26,528 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:18:26,528 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:18:26,528 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:18:26,529 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:18:26,529 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:18:26,529 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:18:26,529 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:18:26,530 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:18:26,530 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:18:26,530 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:18:26,530 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:18:35,238 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:18:35,239 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:18:35,257 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:18:35 BoogieIcfgContainer
[2020-10-14 01:18:35,258 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:18:35,259 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:18:35,260 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:18:35,263 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:18:35,263 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:18:21" (1/3) ...
[2020-10-14 01:18:35,264 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c3333e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:18:35, skipping insertion in model container
[2020-10-14 01:18:35,264 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:18:25" (2/3) ...
[2020-10-14 01:18:35,265 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c3333e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:18:35, skipping insertion in model container
[2020-10-14 01:18:35,265 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:18:35" (3/3) ...
[2020-10-14 01:18:35,267 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label22.c
[2020-10-14 01:18:35,278 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:18:35,288 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:18:35,301 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:18:35,334 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:18:35,334 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:18:35,334 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:18:35,334 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:18:35,335 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:18:35,335 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:18:35,335 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:18:35,335 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:18:35,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:18:35,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1681
[2020-10-14 01:18:35,534 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:18:35,537 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]
[2020-10-14 01:18:35,538 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:18:35,545 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:18:35,546 INFO  L82        PathProgramCache]: Analyzing trace with hash -1586826519, now seen corresponding path program 1 times
[2020-10-14 01:18:35,557 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:18:35,557 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733430389]
[2020-10-14 01:18:35,559 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:18:36,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:37,155 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:41,701 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:41,701 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1702
[2020-10-14 01:18:41,702 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:18:41,702 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5114
[2020-10-14 01:18:41,705 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:41,705 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:41,706 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:18:41,706 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:18:41,706 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1696
[2020-10-14 01:18:41,706 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-10-14 01:18:43,390 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:18:43,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:18:43,398 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:18:43,406 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:18:43,406 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:18:43,407 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:18:43,407 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-14 01:18:43,407 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:18:43,407 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:18:43,408 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:18:43,408 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:18:43,408 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:18:43,408 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:18:45,568 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 01:18:45,569 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733430389]
[2020-10-14 01:18:45,570 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:18:45,571 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-14 01:18:45,572 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656921835]
[2020-10-14 01:18:45,583 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-14 01:18:45,583 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:18:45,599 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-14 01:18:45,602 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-14 01:18:45,604 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 4 states.
[2020-10-14 01:19:02,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:19:02,283 INFO  L93              Difference]: Finished difference Result 6311 states and 11851 transitions.
[2020-10-14 01:19:02,284 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-14 01:19:02,286 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1680
[2020-10-14 01:19:02,295 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:19:02,339 INFO  L225             Difference]: With dead ends: 6311
[2020-10-14 01:19:02,340 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-14 01:19:02,356 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:19:02,388 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-14 01:19:02,604 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3996.
[2020-10-14 01:19:02,605 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3996 states.
[2020-10-14 01:19:02,623 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 6427 transitions.
[2020-10-14 01:19:02,625 INFO  L78                 Accepts]: Start accepts. Automaton has 3996 states and 6427 transitions. Word has length 1680
[2020-10-14 01:19:02,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:19:02,630 INFO  L479      AbstractCegarLoop]: Abstraction has 3996 states and 6427 transitions.
[2020-10-14 01:19:02,630 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-14 01:19:02,630 INFO  L276                IsEmpty]: Start isEmpty. Operand 3996 states and 6427 transitions.
[2020-10-14 01:19:02,746 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1690
[2020-10-14 01:19:02,747 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:19:02,748 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]
[2020-10-14 01:19:02,748 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:19:02,748 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:19:02,749 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:19:02,749 INFO  L82        PathProgramCache]: Analyzing trace with hash 1864606110, now seen corresponding path program 1 times
[2020-10-14 01:19:02,750 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:19:02,750 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035817233]
[2020-10-14 01:19:02,750 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:19:02,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:02,914 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:05,449 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:07,894 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:07,894 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1713
[2020-10-14 01:19:07,895 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:19:07,895 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5006
[2020-10-14 01:19:07,896 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:07,896 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:07,896 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:19:07,896 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:19:07,897 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:19:07,897 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:09,033 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:19:09,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:09,040 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:09,050 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:09,051 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:19:09,051 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:09,051 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-10-14 01:19:09,052 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:09,052 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:09,061 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:19:09,062 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:19:09,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:19:09,064 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 11
[2020-10-14 01:19:09,093 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:19:09,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:09,102 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:09,132 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:09,132 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-14 01:19:09,132 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:09,133 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-10-14 01:19:09,133 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:09,133 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:09,133 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:19:09,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:19:09,134 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-14 01:19:09,134 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:10,569 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 01:19:10,569 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035817233]
[2020-10-14 01:19:10,570 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:19:10,570 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-14 01:19:10,570 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107557378]
[2020-10-14 01:19:10,574 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:19:10,575 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:19:10,575 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:19:10,575 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:19:10,576 INFO  L87              Difference]: Start difference. First operand 3996 states and 6427 transitions. Second operand 8 states.
[2020-10-14 01:19:41,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:19:41,418 INFO  L93              Difference]: Finished difference Result 15367 states and 25148 transitions.
[2020-10-14 01:19:41,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:19:41,420 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1689
[2020-10-14 01:19:41,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:19:41,486 INFO  L225             Difference]: With dead ends: 15367
[2020-10-14 01:19:41,486 INFO  L226             Difference]: Without dead ends: 11377
[2020-10-14 01:19:41,499 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2020-10-14 01:19:41,513 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11377 states.
[2020-10-14 01:19:41,800 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11377 to 11229.
[2020-10-14 01:19:41,800 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11229 states.
[2020-10-14 01:19:41,845 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11229 states to 11229 states and 17289 transitions.
[2020-10-14 01:19:41,845 INFO  L78                 Accepts]: Start accepts. Automaton has 11229 states and 17289 transitions. Word has length 1689
[2020-10-14 01:19:41,846 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:19:41,846 INFO  L479      AbstractCegarLoop]: Abstraction has 11229 states and 17289 transitions.
[2020-10-14 01:19:41,846 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-14 01:19:41,846 INFO  L276                IsEmpty]: Start isEmpty. Operand 11229 states and 17289 transitions.
[2020-10-14 01:19:41,944 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1704
[2020-10-14 01:19:41,945 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:19:41,946 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:19:41,946 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:19:41,947 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:19:41,947 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:19:41,948 INFO  L82        PathProgramCache]: Analyzing trace with hash 1754422838, now seen corresponding path program 1 times
[2020-10-14 01:19:41,948 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:19:41,948 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920780281]
[2020-10-14 01:19:41,949 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:19:42,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:42,195 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:42,612 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:43,270 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:47,122 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:47,122 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1729
[2020-10-14 01:19:47,122 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:19:47,123 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5004
[2020-10-14 01:19:47,123 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:47,123 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:47,123 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:19:47,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-14 01:19:47,124 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-14 01:19:47,124 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:47,529 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:19:47,531 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:47,532 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:47,536 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:47,537 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:19:47,537 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:47,537 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 01:19:47,537 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:47,538 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:47,538 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:19:47,538 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:19:47,538 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:19:47,538 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:47,569 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:19:47,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:47,574 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:47,600 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:47,601 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-14 01:19:47,601 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:47,601 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-10-14 01:19:47,601 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:47,602 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:47,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:19:47,604 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:19:47,605 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-14 01:19:47,605 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:19:47,627 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-14 01:19:47,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:19:47,636 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:19:47,657 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:19:47,657 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-14 01:19:47,657 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:19:47,658 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 23
[2020-10-14 01:19:47,658 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:19:47,658 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:19:47,658 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:19:47,659 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:19:47,659 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-14 01:19:47,659 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:19:48,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:19:48,886 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920780281]
[2020-10-14 01:19:48,887 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:19:48,887 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:19:48,887 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023723463]
[2020-10-14 01:19:48,890 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:19:48,890 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:19:48,890 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:19:48,891 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:19:48,891 INFO  L87              Difference]: Start difference. First operand 11229 states and 17289 transitions. Second operand 7 states.
[2020-10-14 01:20:11,898 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:20:11,899 INFO  L93              Difference]: Finished difference Result 33934 states and 54103 transitions.
[2020-10-14 01:20:11,901 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:20:11,901 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1703
[2020-10-14 01:20:11,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:20:12,007 INFO  L225             Difference]: With dead ends: 33934
[2020-10-14 01:20:12,007 INFO  L226             Difference]: Without dead ends: 22711
[2020-10-14 01:20:12,043 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 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 01:20:12,070 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22711 states.
[2020-10-14 01:20:12,564 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22711 to 22419.
[2020-10-14 01:20:12,564 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22419 states.
[2020-10-14 01:20:12,614 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22419 states to 22419 states and 32359 transitions.
[2020-10-14 01:20:12,616 INFO  L78                 Accepts]: Start accepts. Automaton has 22419 states and 32359 transitions. Word has length 1703
[2020-10-14 01:20:12,617 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:20:12,617 INFO  L479      AbstractCegarLoop]: Abstraction has 22419 states and 32359 transitions.
[2020-10-14 01:20:12,617 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:20:12,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 22419 states and 32359 transitions.
[2020-10-14 01:20:12,729 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1721
[2020-10-14 01:20:12,730 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:20:12,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-14 01:20:12,733 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:20:12,733 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:20:12,734 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:20:12,735 INFO  L82        PathProgramCache]: Analyzing trace with hash -1441306248, now seen corresponding path program 1 times
[2020-10-14 01:20:12,735 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:20:12,736 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516723481]
[2020-10-14 01:20:12,737 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:20:12,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:12,947 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:13,467 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:18,158 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:18,158 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1744
[2020-10-14 01:20:18,158 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:20:18,159 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5253
[2020-10-14 01:20:18,159 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:18,159 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:18,160 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:20:18,160 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:20:18,160 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-14 01:20:18,161 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:18,579 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:20:18,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:18,583 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:18,586 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:18,586 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:20:18,586 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:18,586 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 01:20:18,586 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:18,587 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:18,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:20:18,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:20:18,587 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:20:18,587 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:20:18,604 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:20:18,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:18,617 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:18,650 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:18,650 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:20:18,650 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:18,651 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-14 01:20:18,651 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:18,651 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:18,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:20:18,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:20:18,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-14 01:20:18,652 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:19,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:20:19,825 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516723481]
[2020-10-14 01:20:19,825 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:20:19,825 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:20:19,826 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151372688]
[2020-10-14 01:20:19,828 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:20:19,828 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:20:19,828 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:20:19,829 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:20:19,829 INFO  L87              Difference]: Start difference. First operand 22419 states and 32359 transitions. Second operand 7 states.
[2020-10-14 01:20:42,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:20:42,482 INFO  L93              Difference]: Finished difference Result 67955 states and 104699 transitions.
[2020-10-14 01:20:42,483 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:20:42,483 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1720
[2020-10-14 01:20:42,483 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:20:42,660 INFO  L225             Difference]: With dead ends: 67955
[2020-10-14 01:20:42,660 INFO  L226             Difference]: Without dead ends: 45542
[2020-10-14 01:20:42,734 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:20:42,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45542 states.
[2020-10-14 01:20:43,701 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45542 to 45168.
[2020-10-14 01:20:43,701 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45168 states.
[2020-10-14 01:20:43,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45168 states to 45168 states and 62695 transitions.
[2020-10-14 01:20:43,811 INFO  L78                 Accepts]: Start accepts. Automaton has 45168 states and 62695 transitions. Word has length 1720
[2020-10-14 01:20:43,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:20:43,812 INFO  L479      AbstractCegarLoop]: Abstraction has 45168 states and 62695 transitions.
[2020-10-14 01:20:43,812 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:20:43,812 INFO  L276                IsEmpty]: Start isEmpty. Operand 45168 states and 62695 transitions.
[2020-10-14 01:20:43,962 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1722
[2020-10-14 01:20:43,962 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:20:43,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-14 01:20:43,964 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:20:43,964 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:20:43,965 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:20:43,965 INFO  L82        PathProgramCache]: Analyzing trace with hash 978605488, now seen corresponding path program 1 times
[2020-10-14 01:20:43,966 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:20:43,966 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045669267]
[2020-10-14 01:20:43,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:20:44,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:44,622 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:45,159 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:49,367 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:49,367 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1745
[2020-10-14 01:20:49,367 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:20:49,367 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5015
[2020-10-14 01:20:49,368 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:49,368 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:49,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:20:49,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:20:49,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 47
[2020-10-14 01:20:49,368 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:20:49,641 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:20:49,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:49,645 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:49,650 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:49,650 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:20:49,651 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:49,651 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-14 01:20:49,651 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:49,651 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:49,651 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:20:49,652 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:20:49,652 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:20:49,652 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:20:49,670 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:20:49,678 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:20:49,683 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:20:49,719 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:20:49,720 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-14 01:20:49,720 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:20:49,720 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-10-14 01:20:49,720 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:20:49,720 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:20:49,720 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:20:49,721 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:20:49,721 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-14 01:20:49,721 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:20:50,889 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:20:50,889 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045669267]
[2020-10-14 01:20:50,889 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:20:50,890 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:20:50,890 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608124407]
[2020-10-14 01:20:50,891 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:20:50,892 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:20:50,892 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:20:50,892 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:20:50,892 INFO  L87              Difference]: Start difference. First operand 45168 states and 62695 transitions. Second operand 7 states.
[2020-10-14 01:21:14,462 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:21:14,462 INFO  L93              Difference]: Finished difference Result 134513 states and 202608 transitions.
[2020-10-14 01:21:14,468 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-14 01:21:14,468 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1721
[2020-10-14 01:21:14,468 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:21:14,797 INFO  L225             Difference]: With dead ends: 134513
[2020-10-14 01:21:14,798 INFO  L226             Difference]: Without dead ends: 89351
[2020-10-14 01:21:14,894 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:21:14,979 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 89351 states.
[2020-10-14 01:21:16,792 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 89351 to 82088.
[2020-10-14 01:21:16,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82088 states.
[2020-10-14 01:21:17,008 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82088 states to 82088 states and 116783 transitions.
[2020-10-14 01:21:17,009 INFO  L78                 Accepts]: Start accepts. Automaton has 82088 states and 116783 transitions. Word has length 1721
[2020-10-14 01:21:17,009 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:21:17,010 INFO  L479      AbstractCegarLoop]: Abstraction has 82088 states and 116783 transitions.
[2020-10-14 01:21:17,010 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:21:17,010 INFO  L276                IsEmpty]: Start isEmpty. Operand 82088 states and 116783 transitions.
[2020-10-14 01:21:17,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1744
[2020-10-14 01:21:17,301 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:21:17,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:21:17,303 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:21:17,303 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:21:17,303 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:21:17,304 INFO  L82        PathProgramCache]: Analyzing trace with hash 406851567, now seen corresponding path program 1 times
[2020-10-14 01:21:17,304 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:21:17,304 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159975655]
[2020-10-14 01:21:17,305 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:21:17,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:17,555 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:18,158 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:22,673 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:22,673 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1769
[2020-10-14 01:21:22,674 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:21:22,674 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5187
[2020-10-14 01:21:22,674 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:22,675 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:22,675 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:22,675 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 32
[2020-10-14 01:21:22,675 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 44
[2020-10-14 01:21:22,675 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:21:23,015 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:21:23,017 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:23,018 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:23,020 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:23,020 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:21:23,020 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:23,020 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:21:23,020 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:23,021 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:23,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:21:23,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:23,021 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:21:23,021 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:23,039 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:21:23,044 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:23,047 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:23,058 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:23,059 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-14 01:21:23,059 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:23,059 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-14 01:21:23,059 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:23,059 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:23,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:21:23,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:21:23,059 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-14 01:21:23,060 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:23,070 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-14 01:21:23,079 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:21:23,083 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:21:23,120 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:21:23,120 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-10-14 01:21:23,120 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:21:23,120 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 40
[2020-10-14 01:21:23,120 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:21:23,120 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:21:23,121 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:21:23,121 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:21:23,121 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 42
[2020-10-14 01:21:23,121 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:21:24,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:21:24,572 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159975655]
[2020-10-14 01:21:24,572 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:21:24,572 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-14 01:21:24,572 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841976444]
[2020-10-14 01:21:24,574 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-14 01:21:24,574 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:21:24,575 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-14 01:21:24,575 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2020-10-14 01:21:24,575 INFO  L87              Difference]: Start difference. First operand 82088 states and 116783 transitions. Second operand 8 states.