/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-1.c
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This is Ultimate 0.1.25-d623d84
[2020-07-20 17:14:56,920 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 17:14:56,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 17:14:56,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 17:14:56,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 17:14:56,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 17:14:56,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 17:14:56,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 17:14:56,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 17:14:56,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 17:14:56,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 17:14:56,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 17:14:56,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 17:14:56,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 17:14:56,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 17:14:56,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 17:14:56,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 17:14:56,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 17:14:56,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 17:14:56,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 17:14:56,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 17:14:56,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 17:14:56,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 17:14:56,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 17:14:56,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 17:14:56,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 17:14:56,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 17:14:56,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 17:14:56,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 17:14:56,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 17:14:56,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 17:14:56,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 17:14:56,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 17:14:56,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 17:14:56,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 17:14:56,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 17:14:56,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 17:14:56,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 17:14:56,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 17:14:56,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 17:14:56,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 17:14:56,980 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
[2020-07-20 17:14:56,995 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 17:14:56,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 17:14:56,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 17:14:56,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 17:14:56,997 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 17:14:56,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 17:14:56,998 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 17:14:56,998 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 17:14:56,998 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 17:14:56,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 17:14:56,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 17:14:56,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 17:14:56,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 17:14:56,999 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 17:14:56,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 17:14:56,999 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 17:14:57,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 17:14:57,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 17:14:57,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 17:14:57,000 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 17:14:57,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 17:14:57,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 17:14:57,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 17:14:57,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 17:14:57,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 17:14:57,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 17:14:57,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:14:57,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 17:14:57,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 17:14:57,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-20 17:14:57,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 17:14:57,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 17:14:57,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 17:14:57,319 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 17:14:57,320 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 17:14:57,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c
[2020-07-20 17:14:57,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030dfd33c/d00b3e88017e4c8fbec9339392aab104/FLAG7c0736a76
[2020-07-20 17:14:57,887 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 17:14:57,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c
[2020-07-20 17:14:57,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030dfd33c/d00b3e88017e4c8fbec9339392aab104/FLAG7c0736a76
[2020-07-20 17:14:58,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030dfd33c/d00b3e88017e4c8fbec9339392aab104
[2020-07-20 17:14:58,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 17:14:58,259 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 17:14:58,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 17:14:58,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 17:14:58,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 17:14:58,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4692dc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58, skipping insertion in model container
[2020-07-20 17:14:58,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 17:14:58,295 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 17:14:58,517 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:14:58,529 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 17:14:58,548 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:14:58,567 INFO L208 MainTranslator]: Completed translation
[2020-07-20 17:14:58,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58 WrapperNode
[2020-07-20 17:14:58,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 17:14:58,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 17:14:58,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 17:14:58,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 17:14:58,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (1/1) ...
[2020-07-20 17:14:58,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 17:14:58,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 17:14:58,709 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 17:14:58,709 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 17:14:58,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (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
[2020-07-20 17:14:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 17:14:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 17:14:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure init
[2020-07-20 17:14:58,777 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy
[2020-07-20 17:14:58,778 INFO L138 BoogieDeclarations]: Found implementation of procedure check
[2020-07-20 17:14:58,778 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 17:14:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 17:14:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 17:14:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-07-20 17:14:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure init
[2020-07-20 17:14:58,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 17:14:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy
[2020-07-20 17:14:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure check
[2020-07-20 17:14:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 17:14:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 17:14:58,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 17:14:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-20 17:14:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-07-20 17:14:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 17:14:58,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 17:14:59,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 17:14:59,026 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 17:14:59,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:14:59 BoogieIcfgContainer
[2020-07-20 17:14:59,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 17:14:59,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 17:14:59,033 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 17:14:59,036 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 17:14:59,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:14:58" (1/3) ...
[2020-07-20 17:14:59,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e6a0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:14:59, skipping insertion in model container
[2020-07-20 17:14:59,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:14:58" (2/3) ...
[2020-07-20 17:14:59,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e6a0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:14:59, skipping insertion in model container
[2020-07-20 17:14:59,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:14:59" (3/3) ...
[2020-07-20 17:14:59,041 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-1.c
[2020-07-20 17:14:59,054 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 17:14:59,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 17:14:59,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 17:14:59,131 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 17:14:59,131 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 17:14:59,132 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 17:14:59,132 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 17:14:59,132 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 17:14:59,132 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 17:14:59,132 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 17:14:59,133 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 17:14:59,160 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states.
[2020-07-20 17:14:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-07-20 17:14:59,171 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:14:59,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:14:59,173 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:14:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:14:59,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times
[2020-07-20 17:14:59,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:14:59,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726851816]
[2020-07-20 17:14:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:14:59,368 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 17:14:59,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:14:59,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 47 conjunts are in the unsatisfiable core
[2020-07-20 17:14:59,382 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:14:59,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 17:14:59,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 17:14:59,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726851816]
[2020-07-20 17:14:59,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 17:14:59,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2020-07-20 17:14:59,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499706717]
[2020-07-20 17:14:59,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2020-07-20 17:14:59,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:14:59,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2020-07-20 17:14:59,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182
[2020-07-20 17:14:59,737 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 14 states.
[2020-07-20 17:15:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:15:00,130 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions.
[2020-07-20 17:15:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-07-20 17:15:00,132 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29
[2020-07-20 17:15:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:15:00,145 INFO L225 Difference]: With dead ends: 63
[2020-07-20 17:15:00,145 INFO L226 Difference]: Without dead ends: 38
[2020-07-20 17:15:00,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342
[2020-07-20 17:15:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2020-07-20 17:15:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31.
[2020-07-20 17:15:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2020-07-20 17:15:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2020-07-20 17:15:00,200 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 29
[2020-07-20 17:15:00,200 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:15:00,200 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2020-07-20 17:15:00,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2020-07-20 17:15:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2020-07-20 17:15:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-07-20 17:15:00,203 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:15:00,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:15:00,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:00,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:15:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:15:00,407 INFO L82 PathProgramCache]: Analyzing trace with hash -764276647, now seen corresponding path program 1 times
[2020-07-20 17:15:00,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:15:00,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036851544]
[2020-07-20 17:15:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:00,485 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 17:15:00,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:15:00,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-07-20 17:15:00,490 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:15:00,539 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30
[2020-07-20 17:15:00,542 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 17:15:00,554 INFO L624 ElimStorePlain]: treesize reduction 13, result has 23.5 percent of original size
[2020-07-20 17:15:00,554 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 17:15:00,555 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4
[2020-07-20 17:15:00,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 17:15:00,664 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 17:15:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 17:15:00,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036851544]
[2020-07-20 17:15:00,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 17:15:00,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13
[2020-07-20 17:15:00,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754305058]
[2020-07-20 17:15:00,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-07-20 17:15:00,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:15:00,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-07-20 17:15:00,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2020-07-20 17:15:00,808 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 13 states.
[2020-07-20 17:15:01,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:15:01,055 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions.
[2020-07-20 17:15:01,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-07-20 17:15:01,056 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29
[2020-07-20 17:15:01,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:15:01,058 INFO L225 Difference]: With dead ends: 41
[2020-07-20 17:15:01,058 INFO L226 Difference]: Without dead ends: 29
[2020-07-20 17:15:01,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342
[2020-07-20 17:15:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-07-20 17:15:01,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2020-07-20 17:15:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-07-20 17:15:01,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2020-07-20 17:15:01,077 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 29
[2020-07-20 17:15:01,077 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:15:01,077 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2020-07-20 17:15:01,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-07-20 17:15:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2020-07-20 17:15:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-07-20 17:15:01,079 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:15:01,080 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:15:01,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:01,296 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:15:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:15:01,297 INFO L82 PathProgramCache]: Analyzing trace with hash 337861081, now seen corresponding path program 2 times
[2020-07-20 17:15:01,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:15:01,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145591915]
[2020-07-20 17:15:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:01,370 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-20 17:15:01,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:15:01,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 19 conjunts are in the unsatisfiable core
[2020-07-20 17:15:01,375 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:15:01,383 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21
[2020-07-20 17:15:01,385 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts.
[2020-07-20 17:15:01,398 INFO L624 ElimStorePlain]: treesize reduction 14, result has 22.2 percent of original size
[2020-07-20 17:15:01,398 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 17:15:01,398 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4
[2020-07-20 17:15:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 17:15:01,506 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 17:15:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 17:15:01,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145591915]
[2020-07-20 17:15:01,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 17:15:01,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13
[2020-07-20 17:15:01,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608245973]
[2020-07-20 17:15:01,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states
[2020-07-20 17:15:01,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:15:01,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2020-07-20 17:15:01,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156
[2020-07-20 17:15:01,621 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 13 states.
[2020-07-20 17:15:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:15:01,839 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions.
[2020-07-20 17:15:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-07-20 17:15:01,841 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29
[2020-07-20 17:15:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:15:01,842 INFO L225 Difference]: With dead ends: 39
[2020-07-20 17:15:01,842 INFO L226 Difference]: Without dead ends: 26
[2020-07-20 17:15:01,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342
[2020-07-20 17:15:01,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2020-07-20 17:15:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2020-07-20 17:15:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2020-07-20 17:15:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions.
[2020-07-20 17:15:01,850 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 29
[2020-07-20 17:15:01,850 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:15:01,850 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions.
[2020-07-20 17:15:01,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2020-07-20 17:15:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions.
[2020-07-20 17:15:01,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-07-20 17:15:01,852 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:15:01,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:15:02,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:02,068 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:15:02,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:15:02,068 INFO L82 PathProgramCache]: Analyzing trace with hash 924667095, now seen corresponding path program 1 times
[2020-07-20 17:15:02,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:15:02,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119145385]
[2020-07-20 17:15:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:02,146 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 17:15:02,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:15:02,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 53 conjunts are in the unsatisfiable core
[2020-07-20 17:15:02,152 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:15:02,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-07-20 17:15:02,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 17:15:02,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119145385]
[2020-07-20 17:15:02,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 17:15:02,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2020-07-20 17:15:02,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551775427]
[2020-07-20 17:15:02,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-07-20 17:15:02,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:15:02,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-07-20 17:15:02,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2020-07-20 17:15:02,279 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 11 states.
[2020-07-20 17:15:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:15:02,494 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions.
[2020-07-20 17:15:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2020-07-20 17:15:02,495 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29
[2020-07-20 17:15:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:15:02,495 INFO L225 Difference]: With dead ends: 26
[2020-07-20 17:15:02,495 INFO L226 Difference]: Without dead ends: 0
[2020-07-20 17:15:02,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210
[2020-07-20 17:15:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-07-20 17:15:02,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-07-20 17:15:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-07-20 17:15:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-07-20 17:15:02,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29
[2020-07-20 17:15:02,498 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:15:02,498 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-07-20 17:15:02,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-07-20 17:15:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-07-20 17:15:02,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-20 17:15:02,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:02,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-07-20 17:15:02,977 INFO L268 CegarLoopResult]: For program point initEXIT(lines 11 18) no Hoare annotation was computed.
[2020-07-20 17:15:02,978 INFO L271 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: true
[2020-07-20 17:15:02,978 INFO L268 CegarLoopResult]: For program point initFINAL(lines 11 18) no Hoare annotation was computed.
[2020-07-20 17:15:02,978 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-07-20 17:15:02,978 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true
[2020-07-20 17:15:02,978 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 17:15:02,978 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed.
[2020-07-20 17:15:02,978 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true
[2020-07-20 17:15:02,978 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed.
[2020-07-20 17:15:02,978 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed.
[2020-07-20 17:15:02,979 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-07-20 17:15:02,979 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 |~#d1~0.offset|) (not (= |~#d1~0.base| |~#d2~0.base|)) (= 0 |~#d2~0.offset|))
[2020-07-20 17:15:02,979 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-07-20 17:15:02,979 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-07-20 17:15:02,979 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed.
[2020-07-20 17:15:02,979 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 37) no Hoare annotation was computed.
[2020-07-20 17:15:02,979 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true
[2020-07-20 17:15:02,979 INFO L264 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (or (= |~#d2~0.base| main_~pd1~0.base) (not (= 0 |~#d1~0.offset|)) (not (= 0 |~#d2~0.offset|)) (and (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|))
[2020-07-20 17:15:02,979 INFO L268 CegarLoopResult]: For program point L34-2(lines 34 38) no Hoare annotation was computed.
[2020-07-20 17:15:02,980 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed.
[2020-07-20 17:15:02,980 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed.
[2020-07-20 17:15:02,980 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 30 44) the Hoare annotation is: true
[2020-07-20 17:15:02,980 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 30 44) no Hoare annotation was computed.
[2020-07-20 17:15:02,980 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 30 44) no Hoare annotation was computed.
[2020-07-20 17:15:02,981 INFO L264 CegarLoopResult]: At program point L36(lines 31 44) the Hoare annotation is: (or (not (= 0 |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|) (not (= 0 |~#d2~0.offset|)))
[2020-07-20 17:15:02,981 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (= main_~pd2~0.offset 0)) (.cse1 (= main_~pd2~0.base main_~pd1~0.base))) (or (not (= 0 |~#d1~0.offset|)) (and (= main_~pd2~0.offset main_~pd1~0.offset) (= |~#d2~0.base| main_~pd1~0.base) .cse0 .cse1) (not (= 0 |~#d2~0.offset|)) (and .cse0 .cse1 (= |~#d1~0.base| main_~pd1~0.base) (= main_~pd1~0.offset |~#d1~0.offset|)) (= |~#d1~0.base| |~#d2~0.base|)))
[2020-07-20 17:15:02,981 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed.
[2020-07-20 17:15:02,981 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed.
[2020-07-20 17:15:02,981 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true
[2020-07-20 17:15:02,982 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed.
[2020-07-20 17:15:02,982 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed.
[2020-07-20 17:15:02,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:15:02 BoogieIcfgContainer
[2020-07-20 17:15:02,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 17:15:03,002 INFO L168 Benchmark]: Toolchain (without parser) took 4743.75 ms. Allocated memory was 145.2 MB in the beginning and 249.0 MB in the end (delta: 103.8 MB). Free memory was 103.4 MB in the beginning and 213.9 MB in the end (delta: -110.5 MB). Peak memory consumption was 111.7 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:03,003 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-20 17:15:03,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.58 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 92.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:03,005 INFO L168 Benchmark]: Boogie Preprocessor took 139.19 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.8 MB in the beginning and 180.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:03,005 INFO L168 Benchmark]: RCFGBuilder took 322.15 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 163.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:03,006 INFO L168 Benchmark]: TraceAbstraction took 3967.27 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 162.4 MB in the beginning and 213.9 MB in the end (delta: -51.5 MB). Peak memory consumption was 113.6 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:03,011 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 308.58 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 92.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 139.19 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 92.8 MB in the beginning and 180.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 322.15 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 163.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 3967.27 ms. Allocated memory was 202.4 MB in the beginning and 249.0 MB in the end (delta: 46.7 MB). Free memory was 162.4 MB in the beginning and 213.9 MB in the end (delta: -51.5 MB). Peak memory consumption was 113.6 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 31]: Loop Invariant
Derived loop invariant: (!(0 == d1) || d1 == d2) || !(0 == d2)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 86 SDslu, 552 SDs, 0 SdLazy, 656 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, 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, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 19 NumberOfFragments, 90 HoareAnnotationTreeSize, 16 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 179 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 116 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 19852 SizeOfPredicates, 26 NumberOfNonLiveVariables, 566 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 10/24 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 correct!
Received shutdown request...