/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/test_while_int.c_1.i
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This is Ultimate 0.1.25-d623d84
[2020-07-20 17:15:37,802 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-20 17:15:37,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 17:15:37,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 17:15:37,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 17:15:37,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 17:15:37,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 17:15:37,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 17:15:37,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 17:15:37,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 17:15:37,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 17:15:37,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 17:15:37,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 17:15:37,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 17:15:37,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 17:15:37,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 17:15:37,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 17:15:37,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 17:15:37,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 17:15:37,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 17:15:37,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 17:15:37,863 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 17:15:37,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 17:15:37,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 17:15:37,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 17:15:37,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 17:15:37,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 17:15:37,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 17:15:37,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 17:15:37,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 17:15:37,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 17:15:37,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 17:15:37,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 17:15:37,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 17:15:37,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 17:15:37,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 17:15:37,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 17:15:37,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 17:15:37,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 17:15:37,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 17:15:37,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 17:15:37,890 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 17:15:37,906 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-20 17:15:37,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 17:15:37,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 17:15:37,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-20 17:15:37,908 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-20 17:15:37,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 17:15:37,908 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-20 17:15:37,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-20 17:15:37,909 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-20 17:15:37,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-20 17:15:37,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 17:15:37,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 17:15:37,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 17:15:37,910 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-20 17:15:37,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-20 17:15:37,911 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-20 17:15:37,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-20 17:15:37,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 17:15:37,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-20 17:15:37,911 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-20 17:15:37,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-20 17:15:37,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 17:15:37,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 17:15:37,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 17:15:37,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 17:15:37,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-20 17:15:37,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:37,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 17:15:37,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-20 17:15:37,914 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 17:15:38,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 17:15:38,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 17:15:38,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 17:15:38,265 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-20 17:15:38,266 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-20 17:15:38,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i
[2020-07-20 17:15:38,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6364b731/f2d3df45315140bbb768ccd44bf49334/FLAG0cb81bd4a
[2020-07-20 17:15:38,786 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-20 17:15:38,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i
[2020-07-20 17:15:38,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6364b731/f2d3df45315140bbb768ccd44bf49334/FLAG0cb81bd4a
[2020-07-20 17:15:39,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6364b731/f2d3df45315140bbb768ccd44bf49334
[2020-07-20 17:15:39,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 17:15:39,140 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 17:15:39,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 17:15:39,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 17:15:39,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 17:15:39,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a91c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39, skipping insertion in model container
[2020-07-20 17:15:39,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-20 17:15:39,178 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-20 17:15:39,349 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:15:39,354 INFO L203 MainTranslator]: Completed pre-run
[2020-07-20 17:15:39,370 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-20 17:15:39,385 INFO L208 MainTranslator]: Completed translation
[2020-07-20 17:15:39,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39 WrapperNode
[2020-07-20 17:15:39,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 17:15:39,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 17:15:39,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 17:15:39,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 17:15:39,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (1/1) ...
[2020-07-20 17:15:39,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 17:15:39,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 17:15:39,418 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 17:15:39,418 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-20 17:15:39,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (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 17:15:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 17:15:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 17:15:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert
[2020-07-20 17:15:39,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 17:15:39,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 17:15:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert
[2020-07-20 17:15:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-20 17:15:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 17:15:39,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 17:15:39,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 17:15:39,733 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-07-20 17:15:39,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:15:39 BoogieIcfgContainer
[2020-07-20 17:15:39,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 17:15:39,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 17:15:39,738 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 17:15:39,742 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-20 17:15:39,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:15:39" (1/3) ...
[2020-07-20 17:15:39,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0acbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:15:39, skipping insertion in model container
[2020-07-20 17:15:39,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:15:39" (2/3) ...
[2020-07-20 17:15:39,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b0acbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:15:39, skipping insertion in model container
[2020-07-20 17:15:39,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:15:39" (3/3) ...
[2020-07-20 17:15:39,746 INFO L109 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i
[2020-07-20 17:15:39,755 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 17:15:39,763 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 17:15:39,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 17:15:39,801 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-20 17:15:39,802 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-20 17:15:39,802 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 17:15:39,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 17:15:39,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 17:15:39,802 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-20 17:15:39,803 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 17:15:39,803 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 17:15:39,821 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states.
[2020-07-20 17:15:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2020-07-20 17:15:39,827 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:15:39,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:15:39,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:15:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:15:39,834 INFO L82 PathProgramCache]: Analyzing trace with hash 676687463, now seen corresponding path program 1 times
[2020-07-20 17:15:39,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:15:39,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150520346]
[2020-07-20 17:15:39,842 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 17:15:39,900 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 17:15:39,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:15:39,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-20 17:15:39,908 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:15:39,975 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 17:15:39,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 17:15:39,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150520346]
[2020-07-20 17:15:39,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 17:15:39,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 17:15:39,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398924524]
[2020-07-20 17:15:39,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 17:15:39,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:15:40,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 17:15:40,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-07-20 17:15:40,005 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states.
[2020-07-20 17:15:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:15:40,087 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions.
[2020-07-20 17:15:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-07-20 17:15:40,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9
[2020-07-20 17:15:40,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:15:40,119 INFO L225 Difference]: With dead ends: 30
[2020-07-20 17:15:40,120 INFO L226 Difference]: Without dead ends: 13
[2020-07-20 17:15:40,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 17:15:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2020-07-20 17:15:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12.
[2020-07-20 17:15:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2020-07-20 17:15:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2020-07-20 17:15:40,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9
[2020-07-20 17:15:40,201 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:15:40,201 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2020-07-20 17:15:40,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 17:15:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2020-07-20 17:15:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-07-20 17:15:40,203 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:15:40,203 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:15:40,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:40,419 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:15:40,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:15:40,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1754257002, now seen corresponding path program 1 times
[2020-07-20 17:15:40,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:15:40,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798163195]
[2020-07-20 17:15:40,421 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 17:15:40,456 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s)
[2020-07-20 17:15:40,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-20 17:15:40,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjunts are in the unsatisfiable core
[2020-07-20 17:15:40,460 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 17:15:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 17:15:40,509 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 17:15:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 17:15:40,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798163195]
[2020-07-20 17:15:40,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 17:15:40,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2020-07-20 17:15:40,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281848811]
[2020-07-20 17:15:40,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-20 17:15:40,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 17:15:40,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-20 17:15:40,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2020-07-20 17:15:40,552 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states.
[2020-07-20 17:15:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 17:15:40,590 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions.
[2020-07-20 17:15:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2020-07-20 17:15:40,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11
[2020-07-20 17:15:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 17:15:40,594 INFO L225 Difference]: With dead ends: 18
[2020-07-20 17:15:40,594 INFO L226 Difference]: Without dead ends: 15
[2020-07-20 17:15:40,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2020-07-20 17:15:40,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2020-07-20 17:15:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14.
[2020-07-20 17:15:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2020-07-20 17:15:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2020-07-20 17:15:40,600 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11
[2020-07-20 17:15:40,601 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-20 17:15:40,601 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2020-07-20 17:15:40,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-20 17:15:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2020-07-20 17:15:40,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-07-20 17:15:40,602 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-20 17:15:40,602 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 17:15:40,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:40,810 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 17:15:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 17:15:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2083501651, now seen corresponding path program 2 times
[2020-07-20 17:15:40,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 17:15:40,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182525930]
[2020-07-20 17:15:40,812 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 17:15:40,838 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-20 17:15:40,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-20 17:15:40,838 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 17:15:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 17:15:40,850 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 17:15:40,879 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 17:15:40,879 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 17:15:41,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 17:15:41,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:15:41 BoogieIcfgContainer
[2020-07-20 17:15:41,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 17:15:41,118 INFO L168 Benchmark]: Toolchain (without parser) took 1978.30 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 103.8 MB in the beginning and 129.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:41,119 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-20 17:15:41,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.53 ms. Allocated memory is still 138.4 MB. Free memory was 103.4 MB in the beginning and 94.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:41,121 INFO L168 Benchmark]: Boogie Preprocessor took 30.30 ms. Allocated memory is still 138.4 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:41,122 INFO L168 Benchmark]: RCFGBuilder took 319.27 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.9 MB in the beginning and 171.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:41,123 INFO L168 Benchmark]: TraceAbstraction took 1377.22 ms. Allocated memory is still 202.4 MB. Free memory was 170.6 MB in the beginning and 129.0 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB.
[2020-07-20 17:15:41,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 245.53 ms. Allocated memory is still 138.4 MB. Free memory was 103.4 MB in the beginning and 94.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 30.30 ms. Allocated memory is still 138.4 MB. Free memory was 94.3 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 319.27 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 92.9 MB in the beginning and 171.3 MB in the end (delta: -78.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1377.22 ms. Allocated memory is still 202.4 MB. Free memory was 170.6 MB in the beginning and 129.0 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L12] int i=0;
VAL [i=0]
[L13] COND TRUE i<5
[L14] i++
VAL [i=1]
[L16] (i!=3) ? (0) : __blast_assert ()
VAL [i=1]
[L13] COND TRUE i<5
[L14] i++
VAL [i=2]
[L16] (i!=3) ? (0) : __blast_assert ()
VAL [i=2]
[L13] COND TRUE i<5
[L14] i++
VAL [i=3]
[L16] (i!=3) ? (0) : __blast_assert ()
VAL [i=3]
[L16] CALL __blast_assert ()
[L6] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 3 SDslu, 32 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 456 SizeOfPredicates, 2 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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...