/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c
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This is Ultimate 0.1.25-d623d84
[2020-07-20 11:45:46,083 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 11:45:46,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 11:45:46,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 11:45:46,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 11:45:46,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 11:45:46,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 11:45:46,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 11:45:46,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 11:45:46,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 11:45:46,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 11:45:46,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 11:45:46,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 11:45:46,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 11:45:46,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 11:45:46,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 11:45:46,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 11:45:46,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 11:45:46,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 11:45:46,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 11:45:46,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 11:45:46,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 11:45:46,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 11:45:46,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 11:45:46,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 11:45:46,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 11:45:46,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 11:45:46,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 11:45:46,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 11:45:46,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 11:45:46,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 11:45:46,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 11:45:46,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 11:45:46,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 11:45:46,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 11:45:46,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 11:45:46,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 11:45:46,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 11:45:46,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 11:45:46,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 11:45:46,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 11:45:46,131 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 11:45:46,146 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 11:45:46,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 11:45:46,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 11:45:46,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 11:45:46,148 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 11:45:46,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 11:45:46,148 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 11:45:46,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 11:45:46,149 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 11:45:46,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 11:45:46,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 11:45:46,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 11:45:46,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 11:45:46,150 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 11:45:46,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 11:45:46,150 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 11:45:46,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 11:45:46,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 11:45:46,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 11:45:46,151 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 11:45:46,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 11:45:46,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 11:45:46,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 11:45:46,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 11:45:46,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 11:45:46,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 11:45:46,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:46,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 11:45:46,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 11:45:46,153 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 -> NOT_INCREMENTALLY
[2020-07-20 11:45:46,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 11:45:46,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 11:45:46,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 11:45:46,436 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 11:45:46,436 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 11:45:46,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c
[2020-07-20 11:45:46,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643b17e36/33910b949a91421e88a0e20e3e8c05dc/FLAG3692a922e
[2020-07-20 11:45:46,985 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 11:45:46,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c
[2020-07-20 11:45:46,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643b17e36/33910b949a91421e88a0e20e3e8c05dc/FLAG3692a922e
[2020-07-20 11:45:47,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643b17e36/33910b949a91421e88a0e20e3e8c05dc
[2020-07-20 11:45:47,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 11:45:47,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 11:45:47,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 11:45:47,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 11:45:47,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 11:45:47,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212b6ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47, skipping insertion in model container
[2020-07-20 11:45:47,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 11:45:47,444 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 11:45:47,640 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:45:47,649 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 11:45:47,671 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:45:47,775 INFO L208 MainTranslator]: Completed translation
[2020-07-20 11:45:47,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47 WrapperNode
[2020-07-20 11:45:47,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 11:45:47,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 11:45:47,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 11:45:47,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 11:45:47,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 11:45:47,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 11:45:47,821 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 11:45:47,821 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 11:45:47,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (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 11:45:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 11:45:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 11:45:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-20 11:45:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-20 11:45:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 11:45:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 11:45:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-07-20 11:45:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-20 11:45:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-20 11:45:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 11:45:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-07-20 11:45:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 11:45:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-20 11:45:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-20 11:45:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 11:45:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 11:45:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 11:45:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 11:45:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 11:45:48,217 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 11:45:48,217 INFO L295 CfgBuilder]: Removed 3 assume(true) statements.
[2020-07-20 11:45:48,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:45:48 BoogieIcfgContainer
[2020-07-20 11:45:48,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 11:45:48,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 11:45:48,223 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 11:45:48,226 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 11:45:48,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:45:47" (1/3) ...
[2020-07-20 11:45:48,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4fd74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:45:48, skipping insertion in model container
[2020-07-20 11:45:48,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (2/3) ...
[2020-07-20 11:45:48,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4fd74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:45:48, skipping insertion in model container
[2020-07-20 11:45:48,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:45:48" (3/3) ...
[2020-07-20 11:45:48,230 INFO L109 eAbstractionObserver]: Analyzing ICFG condaf.c
[2020-07-20 11:45:48,240 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 11:45:48,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 11:45:48,261 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 11:45:48,283 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 11:45:48,283 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 11:45:48,284 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 11:45:48,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 11:45:48,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 11:45:48,284 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 11:45:48,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 11:45:48,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 11:45:48,302 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states.
[2020-07-20 11:45:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-07-20 11:45:48,308 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:45:48,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:45:48,310 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:45:48,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:45:48,316 INFO L82 PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times
[2020-07-20 11:45:48,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:45:48,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253451414]
[2020-07-20 11:45:48,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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 11:45:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:45:48,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-20 11:45:48,412 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:45:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:45:48,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:45:48,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253451414]
[2020-07-20 11:45:48,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:45:48,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-20 11:45:48,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113159973]
[2020-07-20 11:45:48,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-20 11:45:48,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:45:48,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-20 11:45:48,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 11:45:48,457 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states.
[2020-07-20 11:45:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:45:48,480 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions.
[2020-07-20 11:45:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2020-07-20 11:45:48,482 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23
[2020-07-20 11:45:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:45:48,489 INFO L225 Difference]: With dead ends: 60
[2020-07-20 11:45:48,489 INFO L226 Difference]: Without dead ends: 28
[2020-07-20 11:45:48,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 11:45:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2020-07-20 11:45:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2020-07-20 11:45:48,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-07-20 11:45:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2020-07-20 11:45:48,532 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23
[2020-07-20 11:45:48,533 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:45:48,533 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2020-07-20 11:45:48,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-20 11:45:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2020-07-20 11:45:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-07-20 11:45:48,535 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:45:48,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:45:48,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:48,750 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:45:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:45:48,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times
[2020-07-20 11:45:48,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:45:48,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8478035]
[2020-07-20 11:45:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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 11:45:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:45:48,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-20 11:45:48,813 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:45:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:45:48,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:45:48,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8478035]
[2020-07-20 11:45:48,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:45:48,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 11:45:48,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207893656]
[2020-07-20 11:45:48,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 11:45:48,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:45:48,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 11:45:48,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-07-20 11:45:48,872 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 4 states.
[2020-07-20 11:45:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:45:48,950 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions.
[2020-07-20 11:45:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-07-20 11:45:48,951 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23
[2020-07-20 11:45:48,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:45:48,953 INFO L225 Difference]: With dead ends: 48
[2020-07-20 11:45:48,953 INFO L226 Difference]: Without dead ends: 35
[2020-07-20 11:45:48,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-07-20 11:45:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-07-20 11:45:48,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31.
[2020-07-20 11:45:48,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2020-07-20 11:45:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2020-07-20 11:45:48,963 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23
[2020-07-20 11:45:48,963 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:45:48,963 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2020-07-20 11:45:48,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 11:45:48,964 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2020-07-20 11:45:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-07-20 11:45:48,965 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:45:48,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:45:49,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:49,179 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:45:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:45:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times
[2020-07-20 11:45:49,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:45:49,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664759463]
[2020-07-20 11:45:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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 11:45:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:45:49,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-20 11:45:49,235 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:45:49,288 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2020-07-20 11:45:49,289 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:45:49,297 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:45:49,297 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:45:49,298 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7
[2020-07-20 11:45:49,341 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7
[2020-07-20 11:45:49,344 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts.
[2020-07-20 11:45:49,348 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:45:49,349 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:45:49,349 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3
[2020-07-20 11:45:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 11:45:49,366 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 11:45:49,421 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 12
[2020-07-20 11:45:49,430 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 22 treesize of output 20
[2020-07-20 11:45:49,432 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts.
[2020-07-20 11:45:49,436 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:45:49,437 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts.
[2020-07-20 11:45:49,441 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:45:49,442 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts.
[2020-07-20 11:45:49,442 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:14, output treesize:7
[2020-07-20 11:45:49,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 11:45:49,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664759463]
[2020-07-20 11:45:49,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 11:45:49,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2020-07-20 11:45:49,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069991143]
[2020-07-20 11:45:49,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-07-20 11:45:49,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:45:49,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-07-20 11:45:49,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-07-20 11:45:49,486 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states.
[2020-07-20 11:45:49,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:45:49,600 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions.
[2020-07-20 11:45:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2020-07-20 11:45:49,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30
[2020-07-20 11:45:49,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:45:49,602 INFO L225 Difference]: With dead ends: 48
[2020-07-20 11:45:49,602 INFO L226 Difference]: Without dead ends: 35
[2020-07-20 11:45:49,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2020-07-20 11:45:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-07-20 11:45:49,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32.
[2020-07-20 11:45:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-07-20 11:45:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions.
[2020-07-20 11:45:49,610 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30
[2020-07-20 11:45:49,611 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:45:49,611 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions.
[2020-07-20 11:45:49,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-07-20 11:45:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions.
[2020-07-20 11:45:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-07-20 11:45:49,612 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 11:45:49,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:45:49,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:49,826 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:45:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:45:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash 446603169, now seen corresponding path program 1 times
[2020-07-20 11:45:49,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:45:49,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376505998]
[2020-07-20 11:45:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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 11:45:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 11:45:49,871 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 11:45:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 11:45:49,889 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 11:45:49,913 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 11:45:49,913 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 11:45:50,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:50,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:45:50 BoogieIcfgContainer
[2020-07-20 11:45:50,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 11:45:50,170 INFO L168 Benchmark]: Toolchain (without parser) took 2762.30 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 102.5 MB in the beginning and 176.6 MB in the end (delta: -74.1 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,171 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.35 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 180.6 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,173 INFO L168 Benchmark]: Boogie Preprocessor took 43.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,173 INFO L168 Benchmark]: RCFGBuilder took 400.89 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 160.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,174 INFO L168 Benchmark]: TraceAbstraction took 1945.93 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 160.0 MB in the beginning and 176.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,178 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 365.35 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 180.6 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 43.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 400.89 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 160.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1945.93 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 160.0 MB in the beginning and 176.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L17] int N;
VAL [\old(N)=6, N=0]
[L21] N = __VERIFIER_nondet_int()
[L22] COND FALSE !(N <= 0)
VAL [\old(N)=0, N=1]
[L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
VAL [\old(cond)=1, \old(N)=0, N=1]
[L11] COND FALSE !(!cond)
VAL [\old(cond)=1, \old(N)=0, cond=1, N=1]
[L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
VAL [\old(N)=0, N=1]
[L25] int i;
[L26] int sum[1];
[L27] int *a = malloc(sizeof(int)*N);
[L29] sum[0] = 0
[L30] i=0
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L30] COND TRUE i<N
[L32] a[i] = 1
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L30] i++
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L30] COND FALSE !(i<N)
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L35] i=0
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L35] COND TRUE i<N
[L37] EXPR a[i]
VAL [\old(N)=0, a={-1:0}, a[i]=1, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L37] COND FALSE !(a[i] == 0)
[L40] EXPR a[i]
[L40] a[i] = a[i] - 1
[L35] i++
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L35] COND FALSE !(i<N)
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L44] i=0
VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L44] COND TRUE i<N
[L46] EXPR sum[0]
[L46] EXPR a[i]
[L46] sum[0] = sum[0] + a[i]
[L44] i++
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L44] COND FALSE !(i<N)
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L49] EXPR sum[0]
VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}, sum[0]=0]
[L49] CALL __VERIFIER_assert(sum[0] == 2*N)
VAL [\old(cond)=0, \old(N)=0, N=1]
[L13] COND TRUE !(cond)
VAL [\old(cond)=0, \old(N)=0, cond=0, N=1]
[L13] __VERIFIER_error()
VAL [\old(cond)=0, \old(N)=0, cond=0, N=1]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 34 SDslu, 86 SDs, 0 SdLazy, 79 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 4902 SizeOfPredicates, 10 NumberOfNonLiveVariables, 289 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/6 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...