/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure-1.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-23 13:36:07,504 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-23 13:36:07,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-23 13:36:07,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-23 13:36:07,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-23 13:36:07,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-23 13:36:07,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-23 13:36:07,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-23 13:36:07,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-23 13:36:07,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2021-02-23 13:36:07,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-23 13:36:07,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2021-02-23 13:36:07,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-23 13:36:07,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-23 13:36:07,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-23 13:36:07,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-23 13:36:07,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-23 13:36:07,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-23 13:36:07,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-23 13:36:07,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-23 13:36:07,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-23 13:36:07,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-23 13:36:07,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-23 13:36:07,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-23 13:36:07,660 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
[2021-02-23 13:36:07,721 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-23 13:36:07,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-23 13:36:07,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-02-23 13:36:07,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-02-23 13:36:07,726 INFO L138 SettingsManager]: * Use SBE=true
[2021-02-23 13:36:07,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-23 13:36:07,727 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-23 13:36:07,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-23 13:36:07,727 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-23 13:36:07,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-23 13:36:07,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-23 13:36:07,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-23 13:36:07,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-23 13:36:07,730 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-23 13:36:07,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-23 13:36:07,730 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-23 13:36:07,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-23 13:36:07,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-23 13:36:07,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-02-23 13:36:07,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-23 13:36:07,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-23 13:36:07,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-23 13:36:07,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-02-23 13:36:07,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-02-23 13:36:07,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-02-23 13:36:07,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-02-23 13:36:07,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-23 13:36:07,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-02-23 13:36:07,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-23 13:36:08,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-23 13:36:08,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-23 13:36:08,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-23 13:36:08,192 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-23 13:36:08,193 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-23 13:36:08,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure-1.i
[2021-02-23 13:36:08,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ff5a99e/e12c7d9cfa9b483093a7cb2c966356fa/FLAG0d77d012f
[2021-02-23 13:36:08,972 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-23 13:36:08,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure-1.i
[2021-02-23 13:36:08,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ff5a99e/e12c7d9cfa9b483093a7cb2c966356fa/FLAG0d77d012f
[2021-02-23 13:36:09,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ff5a99e/e12c7d9cfa9b483093a7cb2c966356fa
[2021-02-23 13:36:09,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-23 13:36:09,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-23 13:36:09,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-23 13:36:09,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-23 13:36:09,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-23 13:36:09,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e81f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09, skipping insertion in model container
[2021-02-23 13:36:09,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-23 13:36:09,393 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-23 13:36:09,535 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure-1.i[303,316]
[2021-02-23 13:36:09,554 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 13:36:09,564 INFO L203 MainTranslator]: Completed pre-run
[2021-02-23 13:36:09,578 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure-1.i[303,316]
[2021-02-23 13:36:09,583 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-23 13:36:09,600 INFO L208 MainTranslator]: Completed translation
[2021-02-23 13:36:09,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09 WrapperNode
[2021-02-23 13:36:09,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-23 13:36:09,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-23 13:36:09,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-23 13:36:09,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-23 13:36:09,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (1/1) ...
[2021-02-23 13:36:09,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-23 13:36:09,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-23 13:36:09,637 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-23 13:36:09,637 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-23 13:36:09,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (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 13:36:09,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-23 13:36:09,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-23 13:36:09,731 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-23 13:36:09,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert
[2021-02-23 13:36:09,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-23 13:36:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-23 13:36:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-23 13:36:09,732 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-23 13:36:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-23 13:36:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert
[2021-02-23 13:36:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-23 13:36:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-23 13:36:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2021-02-23 13:36:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2021-02-23 13:36:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-23 13:36:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-23 13:36:09,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-23 13:36:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-23 13:36:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-23 13:36:09,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2021-02-23 13:36:10,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-23 13:36:10,147 INFO L299 CfgBuilder]: Removed 0 assume(true) statements.
[2021-02-23 13:36:10,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:36:10 BoogieIcfgContainer
[2021-02-23 13:36:10,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-23 13:36:10,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-23 13:36:10,152 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-23 13:36:10,156 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-23 13:36:10,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:36:09" (1/3) ...
[2021-02-23 13:36:10,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d55274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:36:10, skipping insertion in model container
[2021-02-23 13:36:10,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:09" (2/3) ...
[2021-02-23 13:36:10,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d55274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:36:10, skipping insertion in model container
[2021-02-23 13:36:10,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:36:10" (3/3) ...
[2021-02-23 13:36:10,160 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure-1.i
[2021-02-23 13:36:10,168 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-02-23 13:36:10,174 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-23 13:36:10,196 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-23 13:36:10,228 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-23 13:36:10,229 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-23 13:36:10,229 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-02-23 13:36:10,229 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-23 13:36:10,229 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-23 13:36:10,229 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-23 13:36:10,230 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-23 13:36:10,230 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-23 13:36:10,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states.
[2021-02-23 13:36:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-02-23 13:36:10,257 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-23 13:36:10,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-23 13:36:10,259 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-23 13:36:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-23 13:36:10,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1062496394, now seen corresponding path program 1 times
[2021-02-23 13:36:10,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-02-23 13:36:10,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639623865]
[2021-02-23 13:36:10,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-23 13:36:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:36:10,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:36:10,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:36:10,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:36:10,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-23 13:36:10,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:36:10,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:36:10,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-23 13:36:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-23 13:36:10,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-23 13:36:10,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-23 13:36:10,898 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 13:36:10,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639623865]
[2021-02-23 13:36:10,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-23 13:36:10,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-23 13:36:10,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370631613]
[2021-02-23 13:36:10,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-23 13:36:10,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-02-23 13:36:10,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-23 13:36:10,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-23 13:36:10,941 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states.
[2021-02-23 13:36:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-23 13:36:11,029 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions.
[2021-02-23 13:36:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-02-23 13:36:11,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9
[2021-02-23 13:36:11,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-23 13:36:11,040 INFO L225 Difference]: With dead ends: 22
[2021-02-23 13:36:11,041 INFO L226 Difference]: Without dead ends: 0
[2021-02-23 13:36:11,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-23 13:36:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-02-23 13:36:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-02-23 13:36:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-02-23 13:36:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-02-23 13:36:11,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9
[2021-02-23 13:36:11,076 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-23 13:36:11,076 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-02-23 13:36:11,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-23 13:36:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-02-23 13:36:11,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-02-23 13:36:11,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-23 13:36:11,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-02-23 13:36:11,188 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed.
[2021-02-23 13:36:11,189 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed.
[2021-02-23 13:36:11,189 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed.
[2021-02-23 13:36:11,189 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2021-02-23 13:36:11,190 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|))
[2021-02-23 13:36:11,190 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2021-02-23 13:36:11,191 INFO L189 CegarLoopUtils]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed.
[2021-02-23 13:36:11,191 INFO L189 CegarLoopUtils]: For program point __blast_assertEXIT(lines 9 12) no Hoare annotation was computed.
[2021-02-23 13:36:11,191 INFO L189 CegarLoopUtils]: For program point __blast_assertFINAL(lines 9 12) no Hoare annotation was computed.
[2021-02-23 13:36:11,191 INFO L192 CegarLoopUtils]: At program point __blast_assertENTRY(lines 9 12) the Hoare annotation is: true
[2021-02-23 13:36:11,191 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2021-02-23 13:36:11,192 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-23 13:36:11,193 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2021-02-23 13:36:11,193 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2021-02-23 13:36:11,194 INFO L189 CegarLoopUtils]: For program point L32(line 32) no Hoare annotation was computed.
[2021-02-23 13:36:11,194 INFO L185 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: false
[2021-02-23 13:36:11,194 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 26 34) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))
[2021-02-23 13:36:11,196 INFO L189 CegarLoopUtils]: For program point L32-3(line 32) no Hoare annotation was computed.
[2021-02-23 13:36:11,196 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 26 34) no Hoare annotation was computed.
[2021-02-23 13:36:11,197 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 26 34) no Hoare annotation was computed.
[2021-02-23 13:36:11,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:36:11 BoogieIcfgContainer
[2021-02-23 13:36:11,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-23 13:36:11,213 INFO L168 Benchmark]: Toolchain (without parser) took 1861.62 ms. Allocated memory is still 170.9 MB. Free memory was 146.2 MB in the beginning and 120.9 MB in the end (delta: 25.3 MB). Peak memory consumption was 25.4 MB. Max. memory is 8.0 GB.
[2021-02-23 13:36:11,215 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 170.9 MB. Free memory is still 143.8 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 13:36:11,217 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.82 ms. Allocated memory is still 170.9 MB. Free memory was 144.9 MB in the beginning and 135.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-02-23 13:36:11,220 INFO L168 Benchmark]: Boogie Preprocessor took 34.29 ms. Allocated memory is still 170.9 MB. Free memory was 135.5 MB in the beginning and 133.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-23 13:36:11,222 INFO L168 Benchmark]: RCFGBuilder took 513.01 ms. Allocated memory is still 170.9 MB. Free memory was 133.9 MB in the beginning and 119.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
[2021-02-23 13:36:11,227 INFO L168 Benchmark]: TraceAbstraction took 1056.11 ms. Allocated memory is still 170.9 MB. Free memory was 119.3 MB in the beginning and 120.9 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-23 13:36:11,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.21 ms. Allocated memory is still 170.9 MB. Free memory is still 143.8 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 238.82 ms. Allocated memory is still 170.9 MB. Free memory was 144.9 MB in the beginning and 135.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 34.29 ms. Allocated memory is still 170.9 MB. Free memory was 135.5 MB in the beginning and 133.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 513.01 ms. Allocated memory is still 170.9 MB. Free memory was 133.9 MB in the beginning and 119.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1056.11 ms. Allocated memory is still 170.9 MB. Free memory was 119.3 MB in the beginning and 120.9 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 11]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 42 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...