/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_01.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-23 18:48:26,525 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-23 18:48:26,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-23 18:48:26,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-23 18:48:26,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-23 18:48:26,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-23 18:48:26,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-23 18:48:26,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-23 18:48:26,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-23 18:48:26,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-02-23 18:48:26,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-02-23 18:48:26,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-23 18:48:26,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-23 18:48:26,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-23 18:48:26,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-23 18:48:26,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-23 18:48:26,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-23 18:48:26,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-23 18:48:26,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-23 18:48:26,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-23 18:48:26,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-23 18:48:26,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-23 18:48:26,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-23 18:48:26,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-23 18:48:26,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-23 18:48:26,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-23 18:48:26,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2021-02-23 18:48:26,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2021-02-23 18:48:26,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-23 18:48:26,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-23 18:48:26,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2021-02-23 18:48:26,655 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-23 18:48:26,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-23 18:48:26,658 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-23 18:48:26,659 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-23 18:48:26,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-23 18:48:26,660 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-23 18:48:26,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-23 18:48:26,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-23 18:48:26,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-23 18:48:26,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-23 18:48:26,662 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-23 18:48:26,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-23 18:48:26,662 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-23 18:48:26,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-23 18:48:26,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-23 18:48:26,663 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-23 18:48:26,663 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-23 18:48:26,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-23 18:48:26,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-23 18:48:26,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-23 18:48:26,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-23 18:48:26,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-23 18:48:26,665 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-23 18:48:27,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-23 18:48:27,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-23 18:48:27,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-23 18:48:27,076 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-23 18:48:27,077 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-23 18:48:27,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c
[2021-02-23 18:48:27,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48814c824/1c1054f46006477a875e46562cffe8ea/FLAGb6046b282
[2021-02-23 18:48:27,701 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-23 18:48:27,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c
[2021-02-23 18:48:27,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48814c824/1c1054f46006477a875e46562cffe8ea/FLAGb6046b282
[2021-02-23 18:48:28,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48814c824/1c1054f46006477a875e46562cffe8ea
[2021-02-23 18:48:28,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-23 18:48:28,087 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-23 18:48:28,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-23 18:48:28,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-23 18:48:28,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-23 18:48:28,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462f2351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28, skipping insertion in model container
[2021-02-23 18:48:28,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-23 18:48:28,124 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-23 18:48:28,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c[325,338]
[2021-02-23 18:48:28,318 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 18:48:28,329 INFO L203 MainTranslator]: Completed pre-run
[2021-02-23 18:48:28,346 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c[325,338]
[2021-02-23 18:48:28,349 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 18:48:28,363 INFO L208 MainTranslator]: Completed translation
[2021-02-23 18:48:28,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28 WrapperNode
[2021-02-23 18:48:28,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-23 18:48:28,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-23 18:48:28,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-23 18:48:28,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-23 18:48:28,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (1/1) ...
[2021-02-23 18:48:28,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-23 18:48:28,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-23 18:48:28,401 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-23 18:48:28,401 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-23 18:48:28,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (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
[2021-02-23 18:48:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-23 18:48:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-23 18:48:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-23 18:48:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-02-23 18:48:28,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-23 18:48:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-23 18:48:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-23 18:48:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-23 18:48:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-23 18:48:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-02-23 18:48:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-23 18:48:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-23 18:48:28,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-23 18:48:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-23 18:48:28,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-23 18:48:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-23 18:48:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-23 18:48:28,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-23 18:48:28,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-23 18:48:28,980 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-02-23 18:48:28,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:48:28 BoogieIcfgContainer
[2021-02-23 18:48:28,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-23 18:48:28,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-23 18:48:28,990 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-23 18:48:28,997 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-23 18:48:28,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:48:28" (1/3) ...
[2021-02-23 18:48:28,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6133f35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:48:28, skipping insertion in model container
[2021-02-23 18:48:28,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:48:28" (2/3) ...
[2021-02-23 18:48:28,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6133f35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:48:28, skipping insertion in model container
[2021-02-23 18:48:28,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:48:28" (3/3) ...
[2021-02-23 18:48:29,000 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_01.c
[2021-02-23 18:48:29,006 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-23 18:48:29,011 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-23 18:48:29,029 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-23 18:48:29,052 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-23 18:48:29,052 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-23 18:48:29,052 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-23 18:48:29,052 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-23 18:48:29,053 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-23 18:48:29,053 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-23 18:48:29,053 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-23 18:48:29,053 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-23 18:48:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states.
[2021-02-23 18:48:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-02-23 18:48:29,077 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-23 18:48:29,078 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]
[2021-02-23 18:48:29,078 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 18:48:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 18:48:29,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1585410103, now seen corresponding path program 1 times
[2021-02-23 18:48:29,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-23 18:48:29,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343155459]
[2021-02-23 18:48:29,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 18:48:29,170 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-23 18:48:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 18:48:29,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:48:29,300 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:48:29,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:48:29,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:48:29,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 18:48:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 18:48:29,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 18:48:29,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 18:48:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-23 18:48:29,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343155459]
[2021-02-23 18:48:29,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 18:48:29,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-23 18:48:29,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412772590]
[2021-02-23 18:48:29,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-23 18:48:29,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-23 18:48:29,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-23 18:48:29,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-23 18:48:29,433 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states.
[2021-02-23 18:48:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 18:48:29,587 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions.
[2021-02-23 18:48:29,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-02-23 18:48:29,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22
[2021-02-23 18:48:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 18:48:29,601 INFO L225 Difference]: With dead ends: 55
[2021-02-23 18:48:29,602 INFO L226 Difference]: Without dead ends: 31
[2021-02-23 18:48:29,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-23 18:48:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-02-23 18:48:29,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2021-02-23 18:48:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2021-02-23 18:48:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions.
[2021-02-23 18:48:29,673 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 22
[2021-02-23 18:48:29,673 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-23 18:48:29,673 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions.
[2021-02-23 18:48:29,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-02-23 18:48:29,674 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions.
[2021-02-23 18:48:29,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-02-23 18:48:29,676 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-23 18:48:29,676 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]
[2021-02-23 18:48:29,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-23 18:48:29,677 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 18:48:29,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 18:48:29,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1903372374, now seen corresponding path program 1 times
[2021-02-23 18:48:29,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-23 18:48:29,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564891932]
[2021-02-23 18:48:29,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 18:48:29,690 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-23 18:48:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-23 18:48:29,759 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-23 18:48:29,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-23 18:48:29,809 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-23 18:48:29,850 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2021-02-23 18:48:29,851 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-23 18:48:29,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-23 18:48:29,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:48:29 BoogieIcfgContainer
[2021-02-23 18:48:29,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-23 18:48:29,870 INFO L168 Benchmark]: Toolchain (without parser) took 1793.90 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 84.0 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB.
[2021-02-23 18:48:29,871 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 18:48:29,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.67 ms. Allocated memory is still 151.0 MB. Free memory was 106.7 MB in the beginning and 97.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-02-23 18:48:29,873 INFO L168 Benchmark]: Boogie Preprocessor took 34.69 ms. Allocated memory is still 151.0 MB. Free memory was 97.5 MB in the beginning and 96.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-02-23 18:48:29,874 INFO L168 Benchmark]: RCFGBuilder took 581.91 ms. Allocated memory is still 151.0 MB. Free memory was 95.8 MB in the beginning and 122.1 MB in the end (delta: -26.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB.
[2021-02-23 18:48:29,875 INFO L168 Benchmark]: TraceAbstraction took 878.06 ms. Allocated memory is still 151.0 MB. Free memory was 121.4 MB in the beginning and 84.0 MB in the end (delta: 37.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB.
[2021-02-23 18:48:29,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 270.67 ms. Allocated memory is still 151.0 MB. Free memory was 106.7 MB in the beginning and 97.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 34.69 ms. Allocated memory is still 151.0 MB. Free memory was 97.5 MB in the beginning and 96.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 581.91 ms. Allocated memory is still 151.0 MB. Free memory was 95.8 MB in the beginning and 122.1 MB in the end (delta: -26.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 878.06 ms. Allocated memory is still 151.0 MB. Free memory was 121.4 MB in the beginning and 84.0 MB in the end (delta: 37.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 7]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L15] int x=__VERIFIER_nondet_int();
[L15] int x=__VERIFIER_nondet_int();
[L16] int *p = &x;
[L18] EXPR \read(x)
[L18] COND FALSE !(x<100)
[L21] CALL __VERIFIER_assert(0)
[L6] COND TRUE !(cond)
[L7] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 28 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...