/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test26-1.c


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


This is Ultimate 0.2.0-b8ad66e
[2020-10-23 18:26:47,520 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-23 18:26:47,524 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2020-10-23 18:26:47,615 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-23 18:26:47,619 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
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[2020-10-23 18:26:47,634 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2020-10-23 18:26:47,683 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-10-23 18:26:47,686 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-10-23 18:26:47,742 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-23 18:26:47,742 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-23 18:26:47,747 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-23 18:26:47,747 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-23 18:26:47,747 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-23 18:26:47,748 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-23 18:26:47,748 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-23 18:26:47,748 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-23 18:26:47,748 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-23 18:26:47,749 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-23 18:26:47,750 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-23 18:26:47,750 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-23 18:26:47,750 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-23 18:26:47,751 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-23 18:26:47,751 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-23 18:26:47,751 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-23 18:26:47,751 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-23 18:26:47,752 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-23 18:26:47,752 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-23 18:26:47,752 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-23 18:26:47,753 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-23 18:26:47,753 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-23 18:26:47,753 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-23 18:26:47,753 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-23 18:26:47,754 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-23 18:26:47,754 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-23 18:26:47,754 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-23 18:26:47,754 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-23 18:26:47,754 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-23 18:26:47,755 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/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-10-23 18:26:48,196 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-23 18:26:48,224 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-23 18:26:48,227 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-23 18:26:48,228 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-23 18:26:48,229 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-23 18:26:48,230 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-1.c
[2020-10-23 18:26:48,322 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b67dfe08/7ea6ce59c8b84cb3b11a84d3465d4027/FLAG1745ed6b8
[2020-10-23 18:26:48,989 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-23 18:26:48,989 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c
[2020-10-23 18:26:48,997 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b67dfe08/7ea6ce59c8b84cb3b11a84d3465d4027/FLAG1745ed6b8
[2020-10-23 18:26:49,365 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b67dfe08/7ea6ce59c8b84cb3b11a84d3465d4027
[2020-10-23 18:26:49,368 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-23 18:26:49,375 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-23 18:26:49,377 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-23 18:26:49,377 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-23 18:26:49,382 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-23 18:26:49,383 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,388 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e66967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49, skipping insertion in model container
[2020-10-23 18:26:49,388 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,397 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-23 18:26:49,413 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-23 18:26:49,582 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 18:26:49,594 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-23 18:26:49,611 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-23 18:26:49,628 INFO  L208         MainTranslator]: Completed translation
[2020-10-23 18:26:49,628 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49 WrapperNode
[2020-10-23 18:26:49,628 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-23 18:26:49,630 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-23 18:26:49,630 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-23 18:26:49,630 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-23 18:26:49,644 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,644 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,652 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,653 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,660 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,663 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,664 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (1/1) ...
[2020-10-23 18:26:49,666 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-23 18:26:49,667 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-23 18:26:49,667 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-23 18:26:49,667 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-23 18:26:49,668 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2020-10-23 18:26:49,735 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-23 18:26:49,735 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-23 18:26:49,736 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-23 18:26:49,736 INFO  L138     BoogieDeclarations]: Found implementation of procedure assign
[2020-10-23 18:26:49,736 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-23 18:26:49,736 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-23 18:26:49,736 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-23 18:26:49,736 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-23 18:26:49,736 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-23 18:26:49,737 INFO  L130     BoogieDeclarations]: Found specification of procedure assign
[2020-10-23 18:26:49,737 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-23 18:26:49,737 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-23 18:26:49,737 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-23 18:26:49,737 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-23 18:26:49,737 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-23 18:26:49,738 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-23 18:26:49,738 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-23 18:26:49,975 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-23 18:26:49,975 INFO  L298             CfgBuilder]: Removed 0 assume(true) statements.
[2020-10-23 18:26:49,977 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:49 BoogieIcfgContainer
[2020-10-23 18:26:49,977 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-23 18:26:49,979 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-23 18:26:49,979 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-23 18:26:49,982 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-23 18:26:49,983 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:26:49" (1/3) ...
[2020-10-23 18:26:49,984 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7358afee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:49, skipping insertion in model container
[2020-10-23 18:26:49,984 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:49" (2/3) ...
[2020-10-23 18:26:49,984 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7358afee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:49, skipping insertion in model container
[2020-10-23 18:26:49,984 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:49" (3/3) ...
[2020-10-23 18:26:49,986 INFO  L111   eAbstractionObserver]: Analyzing ICFG test26-1.c
[2020-10-23 18:26:50,005 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2020-10-23 18:26:50,015 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-23 18:26:50,049 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-23 18:26:50,142 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-23 18:26:50,142 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-23 18:26:50,142 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2020-10-23 18:26:50,143 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-23 18:26:50,143 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-23 18:26:50,145 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-23 18:26:50,145 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-23 18:26:50,145 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-23 18:26:50,200 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states.
[2020-10-23 18:26:50,207 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2020-10-23 18:26:50,207 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-23 18:26:50,208 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-23 18:26:50,208 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-23 18:26:50,215 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-23 18:26:50,216 INFO  L82        PathProgramCache]: Analyzing trace with hash 1634235034, now seen corresponding path program 1 times
[2020-10-23 18:26:50,227 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2020-10-23 18:26:50,228 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095953149]
[2020-10-23 18:26:50,228 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-23 18:26:50,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-23 18:26:50,511 ERROR L253   erpolLogProxyWrapper]: Interpolant 2 not inductive
[2020-10-23 18:26:50,530 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-23 18:26:50,531 FATAL L?                        ?]: An unrecoverable error occured during an interaction with an SMT solver:
de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check
	at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219)
	at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876)
	at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392)
	at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386)
	at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337)
	at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337)
	at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191)
	at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285)
	at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.<init>(NestedInterpolantsBuilder.java:166)
	at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326)
	at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228)
	at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.<init>(InterpolatingTraceCheckCraig.java:97)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:84)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:74)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:134)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
[2020-10-23 18:26:50,537 INFO  L168              Benchmark]: Toolchain (without parser) took 1165.67 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 123.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.6 MB. Max. memory is 8.0 GB.
[2020-10-23 18:26:50,538 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 18:26:50,539 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 252.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB.
[2020-10-23 18:26:50,540 INFO  L168              Benchmark]: Boogie Preprocessor took 36.42 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-10-23 18:26:50,542 INFO  L168              Benchmark]: RCFGBuilder took 309.91 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 101.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
[2020-10-23 18:26:50,543 INFO  L168              Benchmark]: TraceAbstraction took 555.72 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 123.8 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-23 18:26:50,548 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.3 MB. There was no memory consumed. Max. memory is 8.0 GB.
 * CACSL2BoogieTranslator took 252.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB.
 * Boogie Preprocessor took 36.42 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
 * RCFGBuilder took 309.91 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 101.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
 * TraceAbstraction took 555.72 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 123.8 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 8.0 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check
    de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...