/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label17.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:42:46,060 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:42:46,064 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:42:46,116 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:42:46,117 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:42:46,119 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:42:46,120 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:42:46,123 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:42:46,126 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:42:46,127 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-28 10:42:46,128 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-28 10:42:46,130 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-28 10:42:46,131 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:42:46,132 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:42:46,133 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:42:46,135 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:42:46,136 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:42:46,137 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:42:46,140 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:42:46,142 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:42:46,144 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:42:46,146 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:42:46,148 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:42:46,149 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:42:46,153 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:42:46,153 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:42:46,154 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:42:46,155 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:42:46,156 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:42:46,157 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:42:46,158 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:42:46,159 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:42:46,160 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:42:46,161 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:42:46,162 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:42:46,163 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:42:46,164 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:42:46,164 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:42:46,165 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:42:46,166 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:42:46,167 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:42:46,168 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
[2020-10-28 10:42:46,230 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:42:46,231 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:42:46,232 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:42:46,233 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:42:46,233 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:42:46,233 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:42:46,234 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:42:46,234 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:42:46,234 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:42:46,234 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:42:46,235 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:42:46,235 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:42:46,235 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:42:46,235 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:42:46,236 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:42:46,236 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:42:46,236 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:42:46,236 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:42:46,237 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:42:46,237 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:42:46,237 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:42:46,237 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:42:46,238 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:42:46,238 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:42:46,238 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:42:46,238 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:42:46,239 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:42:46,239 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:42:46,239 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:42:46,239 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:42:46,616 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:42:46,642 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:42:46,646 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:42:46,647 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:42:46,648 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:42:46,649 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label17.c
[2020-10-28 10:42:46,736 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f64a2f77/cc219f7562264f1b98e92154326e0765/FLAG41d1777a8
[2020-10-28 10:42:47,935 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:42:47,936 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label17.c
[2020-10-28 10:42:47,991 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f64a2f77/cc219f7562264f1b98e92154326e0765/FLAG41d1777a8
[2020-10-28 10:42:48,222 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f64a2f77/cc219f7562264f1b98e92154326e0765
[2020-10-28 10:42:48,225 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:42:48,232 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:42:48,234 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:42:48,234 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:42:48,238 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:42:48,239 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:42:48" (1/1) ...
[2020-10-28 10:42:48,243 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9e0cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:48, skipping insertion in model container
[2020-10-28 10:42:48,243 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:42:48" (1/1) ...
[2020-10-28 10:42:48,252 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:42:48,498 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:42:50,849 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:42:50,870 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:42:52,177 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:42:52,251 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:42:52,252 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52 WrapperNode
[2020-10-28 10:42:52,252 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:42:52,254 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:42:52,254 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:42:52,254 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:42:52,269 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (1/1) ...
[2020-10-28 10:42:52,271 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (1/1) ...
[2020-10-28 10:42:52,377 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (1/1) ...
[2020-10-28 10:42:52,377 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (1/1) ...
[2020-10-28 10:42:52,677 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (1/1) ...
[2020-10-28 10:42:52,733 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (1/1) ...
[2020-10-28 10:42:52,781 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (1/1) ...
[2020-10-28 10:42:52,855 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:42:52,857 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:42:52,857 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:42:52,857 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:42:52,858 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (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
[2020-10-28 10:42:53,032 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:42:53,032 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:42:53,033 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:42:53,033 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:42:53,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:42:53,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:42:53,034 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:42:53,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:42:53,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:42:53,035 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:42:53,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:42:53,036 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:42:53,036 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:42:53,036 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:42:53,036 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:42:53,037 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:42:53,038 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:42:53,038 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:42:53,038 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:42:53,038 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:42:53,039 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:42:53,039 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:42:53,039 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:42:53,039 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:42:53,039 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:42:53,040 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:42:53,040 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:42:53,040 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:42:53,040 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:42:53,040 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:42:53,040 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:42:53,041 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:42:53,041 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:43:02,741 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:43:02,742 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:43:02,748 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:43:02 BoogieIcfgContainer
[2020-10-28 10:43:02,748 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:43:02,750 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:43:02,751 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:43:02,755 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:43:02,755 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:42:48" (1/3) ...
[2020-10-28 10:43:02,756 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2967b202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:43:02, skipping insertion in model container
[2020-10-28 10:43:02,756 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:42:52" (2/3) ...
[2020-10-28 10:43:02,757 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2967b202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:43:02, skipping insertion in model container
[2020-10-28 10:43:02,757 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:43:02" (3/3) ...
[2020-10-28 10:43:02,759 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label17.c
[2020-10-28 10:43:02,771 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:43:02,778 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:43:02,793 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:43:02,835 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:43:02,836 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:43:02,836 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:43:02,836 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:43:02,836 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:43:02,836 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:43:02,837 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:43:02,837 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:43:02,893 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:43:03,043 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2020-10-28 10:43:03,043 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:43:03,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:43:03,047 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:43:03,053 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:43:03,055 INFO  L82        PathProgramCache]: Analyzing trace with hash 459314935, now seen corresponding path program 1 times
[2020-10-28 10:43:03,065 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:43:03,066 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978966313]
[2020-10-28 10:43:03,067 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:43:04,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:05,048 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:09,635 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:09,636 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1716
[2020-10-28 10:43:09,636 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:09,636 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5301
[2020-10-28 10:43:09,639 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:09,639 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:09,639 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:43:09,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:43:09,640 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1707
[2020-10-28 10:43:09,640 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-28 10:43:11,314 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:43:11,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:11,348 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:11,375 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:11,376 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:43:11,376 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:11,376 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 39
[2020-10-28 10:43:11,377 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:11,377 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:11,377 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:43:11,377 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:43:11,378 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:43:11,378 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:43:14,844 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:43:14,844 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978966313]
[2020-10-28 10:43:14,846 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:43:14,847 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-28 10:43:14,848 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70561016]
[2020-10-28 10:43:14,858 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-28 10:43:14,859 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:43:14,871 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-28 10:43:14,872 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-28 10:43:14,874 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-28 10:43:38,008 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:43:38,009 INFO  L93              Difference]: Finished difference Result 6315 states and 11856 transitions.
[2020-10-28 10:43:38,011 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-28 10:43:38,013 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1692
[2020-10-28 10:43:38,021 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:43:38,073 INFO  L225             Difference]: With dead ends: 6315
[2020-10-28 10:43:38,074 INFO  L226             Difference]: Without dead ends: 4025
[2020-10-28 10:43:38,088 INFO  L677         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
[2020-10-28 10:43:38,113 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4025 states.
[2020-10-28 10:43:38,299 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998.
[2020-10-28 10:43:38,301 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3998 states.
[2020-10-28 10:43:38,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions.
[2020-10-28 10:43:38,329 INFO  L78                 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1692
[2020-10-28 10:43:38,336 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:43:38,336 INFO  L481      AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions.
[2020-10-28 10:43:38,337 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-28 10:43:38,337 INFO  L276                IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions.
[2020-10-28 10:43:38,453 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1702
[2020-10-28 10:43:38,454 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:43:38,456 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]
[2020-10-28 10:43:38,457 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:43:38,458 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:43:38,459 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:43:38,460 INFO  L82        PathProgramCache]: Analyzing trace with hash 1921694451, now seen corresponding path program 1 times
[2020-10-28 10:43:38,460 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:43:38,461 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438924439]
[2020-10-28 10:43:38,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:43:38,603 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:38,633 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:40,886 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:43,677 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:43,678 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1727
[2020-10-28 10:43:43,678 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:43:43,678 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5070
[2020-10-28 10:43:43,679 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:43,679 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:43,680 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:43:43,680 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:43:43,680 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-28 10:43:43,680 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:43:44,740 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:43:44,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:44,755 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:44,777 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:44,777 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:43:44,777 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:44,778 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-10-28 10:43:44,778 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:44,778 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:44,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:43:44,778 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:43:44,779 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:43:44,779 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:43:44,817 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:43:44,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:44,822 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:44,851 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:44,851 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-28 10:43:44,851 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:44,852 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 30
[2020-10-28 10:43:44,852 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:44,852 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:44,852 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:43:44,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:43:44,853 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-28 10:43:44,853 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:43:46,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:43:46,233 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438924439]
[2020-10-28 10:43:46,233 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:43:46,233 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-28 10:43:46,234 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831979656]
[2020-10-28 10:43:46,238 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-28 10:43:46,239 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:43:46,239 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-28 10:43:46,240 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-28 10:43:46,240 INFO  L87              Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 8 states.
[2020-10-28 10:44:28,890 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:44:28,891 INFO  L93              Difference]: Finished difference Result 15476 states and 25398 transitions.
[2020-10-28 10:44:28,897 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-10-28 10:44:28,898 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1701
[2020-10-28 10:44:28,898 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:44:28,975 INFO  L225             Difference]: With dead ends: 15476
[2020-10-28 10:44:28,975 INFO  L226             Difference]: Without dead ends: 11484
[2020-10-28 10:44:28,991 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-28 10:44:29,071 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11484 states.
[2020-10-28 10:44:29,381 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11484 to 11284.
[2020-10-28 10:44:29,381 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11284 states.
[2020-10-28 10:44:29,417 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 17403 transitions.
[2020-10-28 10:44:29,418 INFO  L78                 Accepts]: Start accepts. Automaton has 11284 states and 17403 transitions. Word has length 1701
[2020-10-28 10:44:29,419 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:44:29,419 INFO  L481      AbstractCegarLoop]: Abstraction has 11284 states and 17403 transitions.
[2020-10-28 10:44:29,419 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-28 10:44:29,419 INFO  L276                IsEmpty]: Start isEmpty. Operand 11284 states and 17403 transitions.
[2020-10-28 10:44:29,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1716
[2020-10-28 10:44:29,476 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:44:29,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:44:29,478 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:44:29,478 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:44:29,478 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:44:29,480 INFO  L82        PathProgramCache]: Analyzing trace with hash 1351029099, now seen corresponding path program 1 times
[2020-10-28 10:44:29,480 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:44:29,480 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027707543]
[2020-10-28 10:44:29,481 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:44:29,616 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:29,649 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:29,893 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:30,340 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:34,739 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:34,739 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1743
[2020-10-28 10:44:34,739 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:44:34,740 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5119
[2020-10-28 10:44:34,740 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:34,740 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:34,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:44:34,740 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:44:34,741 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-28 10:44:34,741 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:35,279 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:44:35,284 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:35,288 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:35,299 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:35,300 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:44:35,300 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:35,300 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-28 10:44:35,300 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:35,300 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:35,301 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:44:35,301 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:44:35,301 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:44:35,301 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:35,330 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:44:35,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:35,338 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:35,370 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:35,370 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-28 10:44:35,371 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:35,371 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 34
[2020-10-28 10:44:35,371 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:35,371 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:35,371 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:44:35,371 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:44:35,372 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-28 10:44:35,372 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:35,407 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-28 10:44:35,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:35,413 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:35,420 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:35,420 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-28 10:44:35,420 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:35,421 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-28 10:44:35,421 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:35,421 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:35,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:44:35,421 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 10
[2020-10-28 10:44:35,422 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:44:35,422 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:36,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2020-10-28 10:44:36,731 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027707543]
[2020-10-28 10:44:36,731 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:44:36,731 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-10-28 10:44:36,731 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257205626]
[2020-10-28 10:44:36,735 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-28 10:44:36,735 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:44:36,738 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-28 10:44:36,738 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-28 10:44:36,738 INFO  L87              Difference]: Start difference. First operand 11284 states and 17403 transitions. Second operand 8 states.
[2020-10-28 10:45:23,514 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:45:23,515 INFO  L93              Difference]: Finished difference Result 44944 states and 73449 transitions.
[2020-10-28 10:45:23,516 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-28 10:45:23,516 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1715
[2020-10-28 10:45:23,516 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:45:23,671 INFO  L225             Difference]: With dead ends: 44944
[2020-10-28 10:45:23,671 INFO  L226             Difference]: Without dead ends: 33666
[2020-10-28 10:45:23,716 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240
[2020-10-28 10:45:23,755 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33666 states.
[2020-10-28 10:45:24,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33666 to 33505.
[2020-10-28 10:45:24,663 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 33505 states.
[2020-10-28 10:45:24,760 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33505 states to 33505 states and 45901 transitions.
[2020-10-28 10:45:24,761 INFO  L78                 Accepts]: Start accepts. Automaton has 33505 states and 45901 transitions. Word has length 1715
[2020-10-28 10:45:24,761 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:45:24,761 INFO  L481      AbstractCegarLoop]: Abstraction has 33505 states and 45901 transitions.
[2020-10-28 10:45:24,761 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-10-28 10:45:24,761 INFO  L276                IsEmpty]: Start isEmpty. Operand 33505 states and 45901 transitions.
[2020-10-28 10:45:24,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1727
[2020-10-28 10:45:24,911 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:45:24,913 INFO  L422         BasicCegarLoop]: trace histogram [3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:45:24,913 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:45:24,914 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:45:24,914 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:45:24,915 INFO  L82        PathProgramCache]: Analyzing trace with hash 1101406708, now seen corresponding path program 1 times
[2020-10-28 10:45:24,915 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:45:24,916 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875686210]
[2020-10-28 10:45:24,916 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:45:25,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:25,082 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:25,150 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:25,707 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:30,095 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:30,095 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1754
[2020-10-28 10:45:30,095 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:45:30,096 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5040
[2020-10-28 10:45:30,096 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:30,096 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:30,096 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:45:30,096 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 32
[2020-10-28 10:45:30,096 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 15
[2020-10-28 10:45:30,096 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:45:30,614 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:45:30,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:30,619 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:30,625 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:30,625 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:45:30,630 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:45:30,631 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-28 10:45:30,631 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:30,631 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:30,631 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:45:30,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:45:30,632 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:45:30,632 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:45:30,658 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:45:30,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:30,669 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:30,692 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:30,692 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-28 10:45:30,692 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:45:30,692 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-10-28 10:45:30,693 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:30,693 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:30,693 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:45:30,693 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:45:30,693 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-28 10:45:30,694 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:45:30,712 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-28 10:45:30,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:30,719 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:30,744 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:30,745 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-28 10:45:30,745 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:45:30,745 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 27
[2020-10-28 10:45:30,745 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:30,745 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:30,745 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:45:30,746 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:45:30,746 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 13
[2020-10-28 10:45:30,746 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:45:32,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-28 10:45:32,162 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875686210]
[2020-10-28 10:45:32,162 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-28 10:45:32,162 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-28 10:45:32,163 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48231363]
[2020-10-28 10:45:32,164 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:45:32,165 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:45:32,165 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:45:32,165 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:45:32,166 INFO  L87              Difference]: Start difference. First operand 33505 states and 45901 transitions. Second operand 7 states.
[2020-10-28 10:46:02,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:46:02,258 INFO  L93              Difference]: Finished difference Result 80625 states and 118531 transitions.
[2020-10-28 10:46:02,260 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-28 10:46:02,260 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1726
[2020-10-28 10:46:02,260 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:46:02,436 INFO  L225             Difference]: With dead ends: 80625
[2020-10-28 10:46:02,436 INFO  L226             Difference]: Without dead ends: 47126
[2020-10-28 10:46:02,548 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:46:02,605 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47126 states.
[2020-10-28 10:46:03,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47126 to 45085.
[2020-10-28 10:46:03,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 45085 states.
[2020-10-28 10:46:04,040 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 45085 states to 45085 states and 63726 transitions.
[2020-10-28 10:46:04,042 INFO  L78                 Accepts]: Start accepts. Automaton has 45085 states and 63726 transitions. Word has length 1726
[2020-10-28 10:46:04,043 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:46:04,043 INFO  L481      AbstractCegarLoop]: Abstraction has 45085 states and 63726 transitions.
[2020-10-28 10:46:04,043 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:46:04,043 INFO  L276                IsEmpty]: Start isEmpty. Operand 45085 states and 63726 transitions.
[2020-10-28 10:46:04,202 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1733
[2020-10-28 10:46:04,203 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:46:04,204 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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[2020-10-28 10:46:04,204 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:46:04,205 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:46:04,205 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:46:04,206 INFO  L82        PathProgramCache]: Analyzing trace with hash -2090282874, now seen corresponding path program 1 times
[2020-10-28 10:46:04,206 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:46:04,207 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739949307]
[2020-10-28 10:46:04,207 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:46:04,349 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:04,387 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:04,990 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:09,511 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:09,511 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1758
[2020-10-28 10:46:09,511 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:46:09,511 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5158
[2020-10-28 10:46:09,512 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:09,512 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:09,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:46:09,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:46:09,512 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 46
[2020-10-28 10:46:09,512 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:46:09,921 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:46:09,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:09,931 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:09,942 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:09,942 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:46:09,942 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:46:09,942 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 13
[2020-10-28 10:46:09,942 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:09,943 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:09,943 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:46:09,943 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:46:09,943 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:46:09,943 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:46:09,980 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:46:09,991 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:09,999 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:10,062 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:10,062 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-28 10:46:10,062 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:46:10,063 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 70
[2020-10-28 10:46:10,063 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:10,063 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:10,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:46:10,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:46:10,063 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 41
[2020-10-28 10:46:10,064 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:46:11,487 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:46:11,487 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739949307]
[2020-10-28 10:46:11,487 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:46:11,488 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2020-10-28 10:46:11,488 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232397518]
[2020-10-28 10:46:11,490 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-10-28 10:46:11,490 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:46:11,491 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-10-28 10:46:11,491 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-10-28 10:46:11,491 INFO  L87              Difference]: Start difference. First operand 45085 states and 63726 transitions. Second operand 8 states.