/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=DEEPEST --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/ldv-regression/test22-2.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-27 19:55:18,976 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-27 19:55:18,979 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-27 19:55:19,017 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-27 19:55:19,017 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-27 19:55:19,019 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-27 19:55:19,021 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-27 19:55:19,023 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-27 19:55:19,026 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-27 19:55:19,027 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-27 19:55:19,029 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-27 19:55:19,031 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-27 19:55:19,031 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-27 19:55:19,033 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-27 19:55:19,034 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-27 19:55:19,036 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-27 19:55:19,037 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-27 19:55:19,038 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-27 19:55:19,041 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-27 19:55:19,043 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-27 19:55:19,046 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-27 19:55:19,049 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-27 19:55:19,050 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-27 19:55:19,052 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-27 19:55:19,055 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-27 19:55:19,056 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-27 19:55:19,056 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-27 19:55:19,058 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-27 19:55:19,058 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-27 19:55:19,060 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-27 19:55:19,060 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-27 19:55:19,061 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-27 19:55:19,062 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-27 19:55:19,064 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-27 19:55:19,065 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-27 19:55:19,065 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-27 19:55:19,066 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-27 19:55:19,067 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-27 19:55:19,067 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-27 19:55:19,068 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-27 19:55:19,083 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-27 19:55:19,087 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
[2020-10-27 19:55:19,146 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-27 19:55:19,147 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-27 19:55:19,151 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-27 19:55:19,151 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-27 19:55:19,151 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-27 19:55:19,152 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-27 19:55:19,154 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-27 19:55:19,154 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-27 19:55:19,154 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-27 19:55:19,154 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-27 19:55:19,154 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-27 19:55:19,155 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-27 19:55:19,155 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-27 19:55:19,155 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-27 19:55:19,155 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-27 19:55:19,156 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-27 19:55:19,156 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-27 19:55:19,157 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-27 19:55:19,157 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-27 19:55:19,158 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-27 19:55:19,158 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-27 19:55:19,158 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 19:55:19,158 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-27 19:55:19,158 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-27 19:55:19,159 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-27 19:55:19,159 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-27 19:55:19,160 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-27 19:55:19,160 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-27 19:55:19,160 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-27 19:55:19,160 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true;
[2020-10-27 19:55:19,643 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-27 19:55:19,693 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-27 19:55:19,698 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-27 19:55:19,699 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-27 19:55:19,700 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-27 19:55:19,701 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c
[2020-10-27 19:55:19,792 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62c8b5518/33f53d93137a492683810bb600da1d30/FLAG1872face7
[2020-10-27 19:55:20,306 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-27 19:55:20,307 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-2.c
[2020-10-27 19:55:20,316 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62c8b5518/33f53d93137a492683810bb600da1d30/FLAG1872face7
[2020-10-27 19:55:20,681 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62c8b5518/33f53d93137a492683810bb600da1d30
[2020-10-27 19:55:20,685 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-27 19:55:20,694 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-27 19:55:20,698 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-27 19:55:20,698 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-27 19:55:20,703 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-27 19:55:20,704 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:20" (1/1) ...
[2020-10-27 19:55:20,714 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23dc0eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:20, skipping insertion in model container
[2020-10-27 19:55:20,715 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:20" (1/1) ...
[2020-10-27 19:55:20,725 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-27 19:55:20,744 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-27 19:55:20,959 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 19:55:20,971 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-27 19:55:20,994 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 19:55:21,016 INFO  L208         MainTranslator]: Completed translation
[2020-10-27 19:55:21,017 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21 WrapperNode
[2020-10-27 19:55:21,017 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-27 19:55:21,018 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-27 19:55:21,018 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-27 19:55:21,018 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-27 19:55:21,033 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (1/1) ...
[2020-10-27 19:55:21,033 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (1/1) ...
[2020-10-27 19:55:21,042 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (1/1) ...
[2020-10-27 19:55:21,043 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (1/1) ...
[2020-10-27 19:55:21,092 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (1/1) ...
[2020-10-27 19:55:21,126 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (1/1) ...
[2020-10-27 19:55:21,130 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (1/1) ...
[2020-10-27 19:55:21,136 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-27 19:55:21,138 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-27 19:55:21,138 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-27 19:55:21,138 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-27 19:55:21,140 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (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
[2020-10-27 19:55:21,219 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-27 19:55:21,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-27 19:55:21,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-27 19:55:21,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure init
[2020-10-27 19:55:21,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_dummy
[2020-10-27 19:55:21,220 INFO  L138     BoogieDeclarations]: Found implementation of procedure check
[2020-10-27 19:55:21,221 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-27 19:55:21,221 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-27 19:55:21,221 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-27 19:55:21,221 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-27 19:55:21,221 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-27 19:55:21,221 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-27 19:55:21,222 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-10-27 19:55:21,222 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2020-10-27 19:55:21,222 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-27 19:55:21,222 INFO  L130     BoogieDeclarations]: Found specification of procedure get_dummy
[2020-10-27 19:55:21,222 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2020-10-27 19:55:21,222 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-27 19:55:21,223 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-27 19:55:21,223 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-27 19:55:21,223 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-27 19:55:21,223 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-27 19:55:21,223 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-27 19:55:21,581 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-27 19:55:21,581 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-27 19:55:21,583 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:21 BoogieIcfgContainer
[2020-10-27 19:55:21,584 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-27 19:55:21,587 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-27 19:55:21,587 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-27 19:55:21,591 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-27 19:55:21,592 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:55:20" (1/3) ...
[2020-10-27 19:55:21,593 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d80dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:21, skipping insertion in model container
[2020-10-27 19:55:21,594 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:21" (2/3) ...
[2020-10-27 19:55:21,594 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d80dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:21, skipping insertion in model container
[2020-10-27 19:55:21,595 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:21" (3/3) ...
[2020-10-27 19:55:21,597 INFO  L111   eAbstractionObserver]: Analyzing ICFG test22-2.c
[2020-10-27 19:55:21,613 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-27 19:55:21,619 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-27 19:55:21,636 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-27 19:55:21,671 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-27 19:55:21,671 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-27 19:55:21,671 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-27 19:55:21,671 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-27 19:55:21,672 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-27 19:55:21,672 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-27 19:55:21,672 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-27 19:55:21,672 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-27 19:55:21,693 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states.
[2020-10-27 19:55:21,701 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-10-27 19:55:21,701 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 19:55:21,706 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 19:55:21,706 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 19:55:21,723 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 19:55:21,723 INFO  L82        PathProgramCache]: Analyzing trace with hash -881056993, now seen corresponding path program 1 times
[2020-10-27 19:55:21,748 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 19:55:21,748 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78181047]
[2020-10-27 19:55:21,749 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 19:55:22,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:22,105 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:22,201 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:22,283 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:23,538 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:23,538 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-10-27 19:55:23,539 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-27 19:55:23,539 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1492
[2020-10-27 19:55:23,542 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:23,542 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:23,542 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-10-27 19:55:23,543 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:23,543 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-27 19:55:23,667 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 19:55:23,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:23,675 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:23,683 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:23,684 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:23,684 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:23,684 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-27 19:55:23,696 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:23,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:23,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:23,697 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:23,697 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:23,717 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-10-27 19:55:23,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:23,721 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:23,723 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:23,723 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:23,723 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:23,723 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 19:55:23,724 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:23,724 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:23,724 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:23,724 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:23,724 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:23,727 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-27 19:55:23,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:23,730 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:23,732 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:23,732 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:23,732 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:23,733 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 19:55:23,733 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:23,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:23,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:23,733 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:23,733 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:23,736 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-10-27 19:55:23,738 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:23,739 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:23,740 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:23,741 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:23,741 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:23,741 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 19:55:23,741 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:23,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:23,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:23,742 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:23,742 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:23,744 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-10-27 19:55:23,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:23,747 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:23,750 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:23,750 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:23,750 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:23,751 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 19:55:23,751 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:23,751 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:23,751 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:23,751 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:23,752 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:23,754 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2020-10-27 19:55:23,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:23,758 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:23,760 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:23,760 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:23,761 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:23,761 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 19:55:23,761 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:23,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:23,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-27 19:55:23,761 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:23,762 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:23,770 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2020-10-27 19:55:23,771 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78181047]
[2020-10-27 19:55:23,773 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 19:55:23,774 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-27 19:55:23,775 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712073907]
[2020-10-27 19:55:23,779 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-27 19:55:23,780 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 19:55:23,794 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-27 19:55:23,795 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-27 19:55:23,797 INFO  L87              Difference]: Start difference. First operand 40 states. Second operand 4 states.
[2020-10-27 19:55:24,151 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 19:55:24,152 INFO  L93              Difference]: Finished difference Result 54 states and 62 transitions.
[2020-10-27 19:55:24,153 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-27 19:55:24,154 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 38
[2020-10-27 19:55:24,155 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 19:55:24,163 INFO  L225             Difference]: With dead ends: 54
[2020-10-27 19:55:24,164 INFO  L226             Difference]: Without dead ends: 32
[2020-10-27 19:55:24,167 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-27 19:55:24,187 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-10-27 19:55:24,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2020-10-27 19:55:24,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-10-27 19:55:24,216 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions.
[2020-10-27 19:55:24,218 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 38
[2020-10-27 19:55:24,220 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 19:55:24,220 INFO  L481      AbstractCegarLoop]: Abstraction has 32 states and 36 transitions.
[2020-10-27 19:55:24,220 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-27 19:55:24,220 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions.
[2020-10-27 19:55:24,222 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-10-27 19:55:24,223 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 19:55:24,223 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 19:55:24,223 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-27 19:55:24,223 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 19:55:24,224 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 19:55:24,224 INFO  L82        PathProgramCache]: Analyzing trace with hash 161769528, now seen corresponding path program 1 times
[2020-10-27 19:55:24,224 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 19:55:24,225 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940597349]
[2020-10-27 19:55:24,225 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 19:55:24,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:24,271 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:24,299 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:24,405 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:24,946 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:27,955 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:27,955 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 19:55:27,955 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-27 19:55:27,955 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3696
[2020-10-27 19:55:27,956 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:27,956 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 19:55:27,956 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 41
[2020-10-27 19:55:27,956 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 19:55:27,956 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:28,047 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 19:55:28,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:28,058 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:28,064 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:28,064 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:28,064 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:28,064 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 19:55:28,064 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:28,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:28,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:28,065 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:28,065 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:28,085 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-10-27 19:55:28,090 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:28,091 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:28,095 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:28,095 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:28,096 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:28,096 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-27 19:55:28,096 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:28,096 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:28,096 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:28,096 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:28,097 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:28,099 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-27 19:55:28,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:28,103 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:28,104 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:28,105 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:28,105 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:28,105 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 19:55:28,105 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:28,106 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:28,106 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:28,106 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:28,106 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:28,108 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-10-27 19:55:28,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:28,114 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:28,116 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:28,116 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:28,116 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:28,117 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 19:55:28,117 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:28,117 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:28,117 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:28,117 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:28,118 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:28,122 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-10-27 19:55:28,126 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:28,127 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:28,128 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:28,129 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:28,129 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:28,130 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-27 19:55:28,130 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:28,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:28,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:28,131 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:28,131 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 19:55:28,134 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2020-10-27 19:55:28,136 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:28,138 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:28,140 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:28,140 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:28,141 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:28,142 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 19:55:28,146 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:28,146 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:28,146 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-27 19:55:28,147 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:28,147 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 19:55:28,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2020-10-27 19:55:28,154 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940597349]
[2020-10-27 19:55:28,156 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 19:55:28,156 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-10-27 19:55:28,156 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038355213]
[2020-10-27 19:55:28,158 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-27 19:55:28,165 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 19:55:28,167 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-27 19:55:28,168 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-10-27 19:55:28,168 INFO  L87              Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states.
[2020-10-27 19:55:28,613 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 19:55:28,614 INFO  L93              Difference]: Finished difference Result 44 states and 48 transitions.
[2020-10-27 19:55:28,614 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-10-27 19:55:28,614 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 39
[2020-10-27 19:55:28,615 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 19:55:28,616 INFO  L225             Difference]: With dead ends: 44
[2020-10-27 19:55:28,616 INFO  L226             Difference]: Without dead ends: 32
[2020-10-27 19:55:28,617 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-27 19:55:28,618 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2020-10-27 19:55:28,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2020-10-27 19:55:28,627 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-10-27 19:55:28,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions.
[2020-10-27 19:55:28,628 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 39
[2020-10-27 19:55:28,629 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 19:55:28,629 INFO  L481      AbstractCegarLoop]: Abstraction has 32 states and 35 transitions.
[2020-10-27 19:55:28,629 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-27 19:55:28,629 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions.
[2020-10-27 19:55:28,630 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-10-27 19:55:28,630 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 19:55:28,631 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-27 19:55:28,631 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-27 19:55:28,631 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 19:55:28,632 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 19:55:28,632 INFO  L82        PathProgramCache]: Analyzing trace with hash -96395910, now seen corresponding path program 1 times
[2020-10-27 19:55:28,632 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 19:55:28,633 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782825984]
[2020-10-27 19:55:28,633 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 19:55:28,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:28,670 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:28,754 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:30,037 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:30,038 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 57
[2020-10-27 19:55:30,038 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 19:55:30,038 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1378
[2020-10-27 19:55:30,038 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:30,038 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 12
[2020-10-27 19:55:30,039 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 28
[2020-10-27 19:55:30,039 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-27 19:55:30,039 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:30,285 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 19:55:30,290 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:30,292 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:30,300 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:30,300 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:30,300 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:30,300 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 19:55:30,301 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:30,301 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:30,301 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:30,301 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:30,302 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:30,332 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2020-10-27 19:55:30,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:30,336 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:30,338 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:30,338 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:30,338 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:30,338 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 3
[2020-10-27 19:55:30,339 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:30,339 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:30,339 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:30,339 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:30,339 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:30,341 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-10-27 19:55:30,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:30,344 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:30,346 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:30,346 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:30,346 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:30,346 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-10-27 19:55:30,346 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:30,347 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:30,347 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:30,347 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:30,347 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:30,348 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-10-27 19:55:30,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:30,352 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:30,360 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:30,360 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:30,361 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:30,361 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-27 19:55:30,361 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:30,361 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-27 19:55:30,361 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:30,361 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-10-27 19:55:30,361 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 19:55:30,439 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-10-27 19:55:30,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:30,445 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:30,452 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:30,453 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 9
[2020-10-27 19:55:30,453 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:30,453 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-27 19:55:30,453 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:30,453 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-10-27 19:55:30,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 19:55:30,454 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-27 19:55:30,454 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 19:55:30,460 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2020-10-27 19:55:30,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 19:55:30,463 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 19:55:30,465 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 19:55:30,465 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 19:55:30,465 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 19:55:30,466 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-27 19:55:30,466 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 19:55:30,466 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 19:55:30,466 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-27 19:55:30,467 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 19:55:30,467 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 19:55:30,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-10-27 19:55:30,482 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782825984]
[2020-10-27 19:55:30,482 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 19:55:30,483 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13
[2020-10-27 19:55:30,483 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951735087]
[2020-10-27 19:55:30,484 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-10-27 19:55:30,484 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 19:55:30,485 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-10-27 19:55:30,488 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156
[2020-10-27 19:55:30,488 INFO  L87              Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 13 states.
[2020-10-27 19:55:30,631 WARN  L193               SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 46
[2020-10-27 19:55:32,038 WARN  L193               SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 64
[2020-10-27 19:55:32,421 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 19:55:32,422 INFO  L93              Difference]: Finished difference Result 66 states and 77 transitions.
[2020-10-27 19:55:32,422 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-10-27 19:55:32,423 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 39
[2020-10-27 19:55:32,423 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 19:55:32,426 INFO  L225             Difference]: With dead ends: 66
[2020-10-27 19:55:32,427 INFO  L226             Difference]: Without dead ends: 57
[2020-10-27 19:55:32,431 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506
[2020-10-27 19:55:32,432 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2020-10-27 19:55:32,447 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42.
[2020-10-27 19:55:32,448 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2020-10-27 19:55:32,449 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions.
[2020-10-27 19:55:32,449 INFO  L78                 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 39
[2020-10-27 19:55:32,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 19:55:32,450 INFO  L481      AbstractCegarLoop]: Abstraction has 42 states and 49 transitions.
[2020-10-27 19:55:32,450 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-10-27 19:55:32,450 INFO  L276                IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions.
[2020-10-27 19:55:32,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-10-27 19:55:32,452 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 19:55:32,452 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 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]
[2020-10-27 19:55:32,452 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-27 19:55:32,452 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 19:55:32,453 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 19:55:32,453 INFO  L82        PathProgramCache]: Analyzing trace with hash -1684743812, now seen corresponding path program 1 times
[2020-10-27 19:55:32,453 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 19:55:32,454 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142842596]
[2020-10-27 19:55:32,454 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 19:55:32,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-27 19:55:32,476 INFO  L173   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-27 19:55:32,476 INFO  L523         BasicCegarLoop]: Counterexample might be feasible
[2020-10-27 19:55:32,481 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-27 19:55:32,500 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:55:32 BoogieIcfgContainer
[2020-10-27 19:55:32,500 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-27 19:55:32,503 INFO  L168              Benchmark]: Toolchain (without parser) took 11813.54 ms. Allocated memory was 158.3 MB in the beginning and 304.1 MB in the end (delta: 145.8 MB). Free memory was 116.0 MB in the beginning and 184.7 MB in the end (delta: -68.6 MB). Peak memory consumption was 78.4 MB. Max. memory is 8.0 GB.
[2020-10-27 19:55:32,503 INFO  L168              Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 158.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-27 19:55:32,504 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 319.36 ms. Allocated memory is still 158.3 MB. Free memory was 115.5 MB in the beginning and 134.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB.
[2020-10-27 19:55:32,505 INFO  L168              Benchmark]: Boogie Preprocessor took 118.22 ms. Allocated memory is still 158.3 MB. Free memory was 134.7 MB in the beginning and 140.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB.
[2020-10-27 19:55:32,506 INFO  L168              Benchmark]: RCFGBuilder took 445.70 ms. Allocated memory is still 158.3 MB. Free memory was 140.6 MB in the beginning and 122.8 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
[2020-10-27 19:55:32,507 INFO  L168              Benchmark]: TraceAbstraction took 10913.47 ms. Allocated memory was 158.3 MB in the beginning and 304.1 MB in the end (delta: 145.8 MB). Free memory was 122.3 MB in the beginning and 184.7 MB in the end (delta: -62.4 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB.
[2020-10-27 19:55:32,511 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.68 ms. Allocated memory is still 158.3 MB. Free memory is still 132.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 319.36 ms. Allocated memory is still 158.3 MB. Free memory was 115.5 MB in the beginning and 134.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 118.22 ms. Allocated memory is still 158.3 MB. Free memory was 134.7 MB in the beginning and 140.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 445.70 ms. Allocated memory is still 158.3 MB. Free memory was 140.6 MB in the beginning and 122.8 MB in the end (delta: 17.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 10913.47 ms. Allocated memory was 158.3 MB in the beginning and 304.1 MB in the end (delta: 145.8 MB). Free memory was 122.3 MB in the beginning and 184.7 MB in the end (delta: -62.4 MB). Peak memory consumption was 84.4 MB. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L11]              struct dummy d1, d2;
[L34]  CALL        init()
[L15]              d1.a = __VERIFIER_nondet_int()
[L16]              d1.b = __VERIFIER_nondet_int()
[L18]              d2.a = __VERIFIER_nondet_int()
[L19]              d2.b = __VERIFIER_nondet_int()
[L34]  RET         init()
[L35]  CALL, EXPR  get_dummy()
[L24]  EXPR        __VERIFIER_nondet_bool() ? &d1 : &d2
[L24]              return (__VERIFIER_nondet_bool() ? &d1 : &d2);
[L35]  RET, EXPR   get_dummy()
[L35]              struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy();
[L35]  CALL, EXPR  get_dummy()
[L24]  EXPR        __VERIFIER_nondet_bool() ? &d1 : &d2
[L24]              return (__VERIFIER_nondet_bool() ? &d1 : &d2);
[L35]  RET, EXPR   get_dummy()
[L35]              struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy();
[L35]  CALL, EXPR  get_dummy()
[L24]  EXPR        __VERIFIER_nondet_bool() ? &d1 : &d2
[L24]              return (__VERIFIER_nondet_bool() ? &d1 : &d2);
[L35]  RET, EXPR   get_dummy()
[L35]              struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy();
[L36]              int i = __VERIFIER_nondet_int();
[L37]              pd1 != 0 && pd1 == pd2 && (*pd2).a > 0
[L37]  EXPR        (*pd2).a
[L37]              pd1 != 0 && pd1 == pd2 && (*pd2).a > 0
[L37]  COND TRUE   pd1 != 0 && pd1 == pd2 && (*pd2).a > 0
[L38]              int *pa = &pd1->a;
[L39]  EXPR        pd3->a
[L39]              i = pd3->a - 10
[L40]  EXPR        \read(*pa)
[L40]  COND FALSE  !(i < *pa)
[L43]  CALL, EXPR  check(pd2, i)
[L29]  EXPR        s1->a
[L29]              return s1->a == i;
[L43]  RET, EXPR   check(pd2, i)
[L43]  COND TRUE   !check(pd2, i)
[L50]  CALL        reach_error()
[L3]               __assert_fail("0", "test22-2.c", 3, "reach_error")

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 7 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 116 SDslu, 73 SDs, 0 SdLazy, 448 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 12345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...