/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/trex04.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-7d8eed3
[2020-11-07 06:35:37,885 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-11-07 06:35:37,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-07 06:35:37,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-07 06:35:37,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-07 06:35:37,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-07 06:35:37,929 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-07 06:35:37,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-11-07 06:35:37,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-07 06:35:37,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-11-07 06:35:37,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-11-07 06:35:37,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-11-07 06:35:37,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-07 06:35:37,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-11-07 06:35:37,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-11-07 06:35:37,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-07 06:35:37,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-07 06:35:37,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-07 06:35:37,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-07 06:35:37,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-07 06:35:37,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-07 06:35:37,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-07 06:35:37,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-11-07 06:35:37,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-07 06:35:37,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-11-07 06:35:37,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-11-07 06:35:37,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2020-11-07 06:35:37,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-11-07 06:35:37,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-11-07 06:35:37,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2020-11-07 06:35:37,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
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[2020-11-07 06:35:37,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2020-11-07 06:35:37,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-11-07 06:35:37,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-11-07 06:35:38,015 INFO L113 SettingsManager]: Loading preferences was successful
[2020-11-07 06:35:38,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-07 06:35:38,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-07 06:35:38,020 INFO L138 SettingsManager]: * sizeof long=4
[2020-11-07 06:35:38,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-11-07 06:35:38,021 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-11-07 06:35:38,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-11-07 06:35:38,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-11-07 06:35:38,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-07 06:35:38,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-11-07 06:35:38,023 INFO L138 SettingsManager]: * sizeof long double=12
[2020-11-07 06:35:38,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-11-07 06:35:38,024 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-11-07 06:35:38,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-11-07 06:35:38,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-07 06:35:38,025 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-11-07 06:35:38,025 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-11-07 06:35:38,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-11-07 06:35:38,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-07 06:35:38,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-07 06:35:38,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-11-07 06:35:38,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-07 06:35:38,027 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true
[2020-11-07 06:35:38,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-07 06:35:38,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-07 06:35:38,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-07 06:35:38,467 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-11-07 06:35:38,468 INFO L275 PluginConnector]: CDTParser initialized
[2020-11-07 06:35:38,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c
[2020-11-07 06:35:38,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e544c809/d9babbe6c3c849358a95aa12e0a79a63/FLAG50a6cba0c
[2020-11-07 06:35:39,306 INFO L306 CDTParser]: Found 1 translation units.
[2020-11-07 06:35:39,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c
[2020-11-07 06:35:39,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e544c809/d9babbe6c3c849358a95aa12e0a79a63/FLAG50a6cba0c
[2020-11-07 06:35:39,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e544c809/d9babbe6c3c849358a95aa12e0a79a63
[2020-11-07 06:35:39,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-07 06:35:39,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-07 06:35:39,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-07 06:35:39,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-07 06:35:39,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-07 06:35:39,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:39,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2bfad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39, skipping insertion in model container
[2020-11-07 06:35:39,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:39,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-11-07 06:35:39,696 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-11-07 06:35:39,925 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-07 06:35:39,937 INFO L203 MainTranslator]: Completed pre-run
[2020-11-07 06:35:39,970 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-07 06:35:39,998 INFO L208 MainTranslator]: Completed translation
[2020-11-07 06:35:39,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39 WrapperNode
[2020-11-07 06:35:39,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-07 06:35:40,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-07 06:35:40,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-07 06:35:40,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-11-07 06:35:40,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:40,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:40,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:40,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:40,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:40,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:40,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (1/1) ...
[2020-11-07 06:35:40,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-07 06:35:40,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-07 06:35:40,057 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-11-07 06:35:40,057 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-11-07 06:35:40,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (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
[2020-11-07 06:35:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-07 06:35:40,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-07 06:35:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-07 06:35:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-11-07 06:35:40,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-11-07 06:35:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure foo
[2020-11-07 06:35:40,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-11-07 06:35:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-11-07 06:35:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-07 06:35:40,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-07 06:35:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-07 06:35:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-11-07 06:35:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-11-07 06:35:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2020-11-07 06:35:40,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-11-07 06:35:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure foo
[2020-11-07 06:35:40,155 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-11-07 06:35:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-07 06:35:40,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-07 06:35:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-07 06:35:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-11-07 06:35:40,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-11-07 06:35:40,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-07 06:35:40,809 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-07 06:35:40,810 INFO L298 CfgBuilder]: Removed 1 assume(true) statements.
[2020-11-07 06:35:40,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:40 BoogieIcfgContainer
[2020-11-07 06:35:40,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-07 06:35:40,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-07 06:35:40,815 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-11-07 06:35:40,819 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-11-07 06:35:40,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:35:39" (1/3) ...
[2020-11-07 06:35:40,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b9ffee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:40, skipping insertion in model container
[2020-11-07 06:35:40,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:35:39" (2/3) ...
[2020-11-07 06:35:40,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b9ffee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:35:40, skipping insertion in model container
[2020-11-07 06:35:40,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:35:40" (3/3) ...
[2020-11-07 06:35:40,823 INFO L111 eAbstractionObserver]: Analyzing ICFG trex04.c
[2020-11-07 06:35:40,839 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-11-07 06:35:40,842 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-07 06:35:40,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-07 06:35:40,919 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-11-07 06:35:40,920 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-11-07 06:35:40,920 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-11-07 06:35:40,920 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-07 06:35:40,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-07 06:35:40,920 INFO L382 AbstractCegarLoop]: Difference is false
[2020-11-07 06:35:40,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-07 06:35:40,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-07 06:35:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states.
[2020-11-07 06:35:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2020-11-07 06:35:40,952 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-07 06:35:40,953 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 06:35:40,953 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 06:35:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 06:35:40,960 INFO L82 PathProgramCache]: Analyzing trace with hash 193464954, now seen corresponding path program 1 times
[2020-11-07 06:35:40,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 06:35:40,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034400077]
[2020-11-07 06:35:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 06:35:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 06:35:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-11-07 06:35:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-11-07 06:35:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-11-07 06:35:41,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034400077]
[2020-11-07 06:35:41,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-11-07 06:35:41,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-11-07 06:35:41,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135006470]
[2020-11-07 06:35:41,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-11-07 06:35:41,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-11-07 06:35:41,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-11-07 06:35:41,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-11-07 06:35:41,377 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 6 states.
[2020-11-07 06:35:41,932 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 34
[2020-11-07 06:35:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-11-07 06:35:42,261 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions.
[2020-11-07 06:35:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-11-07 06:35:42,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35
[2020-11-07 06:35:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-11-07 06:35:42,271 INFO L225 Difference]: With dead ends: 78
[2020-11-07 06:35:42,271 INFO L226 Difference]: Without dead ends: 0
[2020-11-07 06:35:42,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2020-11-07 06:35:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-11-07 06:35:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-11-07 06:35:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-11-07 06:35:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-11-07 06:35:42,304 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35
[2020-11-07 06:35:42,304 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-11-07 06:35:42,304 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-11-07 06:35:42,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-11-07 06:35:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-11-07 06:35:42,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-11-07 06:35:42,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-07 06:35:42,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-11-07 06:35:42,814 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,814 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,814 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,815 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,815 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,815 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,815 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-11-07 06:35:42,815 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,816 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true
[2020-11-07 06:35:42,816 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,816 INFO L262 CegarLoopResult]: 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|))
[2020-11-07 06:35:42,816 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,816 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true
[2020-11-07 06:35:42,817 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2020-11-07 06:35:42,817 INFO L269 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true
[2020-11-07 06:35:42,817 INFO L269 CegarLoopResult]: At program point fooEXIT(lines 18 25) the Hoare annotation is: true
[2020-11-07 06:35:42,817 INFO L269 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true
[2020-11-07 06:35:42,817 INFO L269 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true
[2020-11-07 06:35:42,817 INFO L269 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true
[2020-11-07 06:35:42,818 INFO L269 CegarLoopResult]: At program point fooENTRY(lines 18 25) the Hoare annotation is: true
[2020-11-07 06:35:42,818 INFO L269 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true
[2020-11-07 06:35:42,818 INFO L269 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true
[2020-11-07 06:35:42,818 INFO L269 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: true
[2020-11-07 06:35:42,818 INFO L269 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: true
[2020-11-07 06:35:42,818 INFO L269 CegarLoopResult]: At program point L22-2(line 22) the Hoare annotation is: true
[2020-11-07 06:35:42,819 INFO L269 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: true
[2020-11-07 06:35:42,819 INFO L269 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: true
[2020-11-07 06:35:42,819 INFO L269 CegarLoopResult]: At program point L23-4(lines 18 25) the Hoare annotation is: true
[2020-11-07 06:35:42,819 INFO L269 CegarLoopResult]: At program point L21-3(line 21) the Hoare annotation is: true
[2020-11-07 06:35:42,819 INFO L269 CegarLoopResult]: At program point L22-5(lines 19 25) the Hoare annotation is: true
[2020-11-07 06:35:42,819 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2020-11-07 06:35:42,820 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-11-07 06:35:42,820 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-11-07 06:35:42,820 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2020-11-07 06:35:42,820 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed.
[2020-11-07 06:35:42,820 INFO L266 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed.
[2020-11-07 06:35:42,820 INFO L266 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed.
[2020-11-07 06:35:42,820 INFO L266 CegarLoopResult]: For program point L6-3(lines 5 7) no Hoare annotation was computed.
[2020-11-07 06:35:42,821 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed.
[2020-11-07 06:35:42,821 INFO L269 CegarLoopResult]: At program point L35-2(line 35) the Hoare annotation is: true
[2020-11-07 06:35:42,821 INFO L269 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true
[2020-11-07 06:35:42,821 INFO L269 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: true
[2020-11-07 06:35:42,821 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 27 48) the Hoare annotation is: true
[2020-11-07 06:35:42,821 INFO L269 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: true
[2020-11-07 06:35:42,822 INFO L269 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: true
[2020-11-07 06:35:42,822 INFO L269 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true
[2020-11-07 06:35:42,822 INFO L269 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: true
[2020-11-07 06:35:42,822 INFO L269 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: true
[2020-11-07 06:35:42,822 INFO L269 CegarLoopResult]: At program point L32-3(line 32) the Hoare annotation is: true
[2020-11-07 06:35:42,822 INFO L269 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true
[2020-11-07 06:35:42,823 INFO L269 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true
[2020-11-07 06:35:42,823 INFO L269 CegarLoopResult]: At program point L37-2(line 37) the Hoare annotation is: true
[2020-11-07 06:35:42,823 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 27 48) the Hoare annotation is: true
[2020-11-07 06:35:42,823 INFO L269 CegarLoopResult]: At program point L42-1(lines 28 48) the Hoare annotation is: true
[2020-11-07 06:35:42,823 INFO L262 CegarLoopResult]: At program point L42-2(lines 42 45) the Hoare annotation is: (<= main_~x~0 0)
[2020-11-07 06:35:42,824 INFO L269 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true
[2020-11-07 06:35:42,824 INFO L269 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: true
[2020-11-07 06:35:42,824 INFO L269 CegarLoopResult]: At program point L34-3(lines 28 48) the Hoare annotation is: true
[2020-11-07 06:35:42,824 INFO L269 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true
[2020-11-07 06:35:42,824 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 27 48) the Hoare annotation is: true
[2020-11-07 06:35:42,824 INFO L269 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: true
[2020-11-07 06:35:42,824 INFO L269 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: true
[2020-11-07 06:35:42,825 INFO L269 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: true
[2020-11-07 06:35:42,825 INFO L269 CegarLoopResult]: At program point L39-1(line 39) the Hoare annotation is: true
[2020-11-07 06:35:42,825 INFO L269 CegarLoopResult]: At program point L39-3(lines 28 48) the Hoare annotation is: true
[2020-11-07 06:35:42,825 INFO L269 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true
[2020-11-07 06:35:42,825 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true
[2020-11-07 06:35:42,826 INFO L262 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2020-11-07 06:35:42,826 INFO L262 CegarLoopResult]: At program point L10(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2020-11-07 06:35:42,826 INFO L262 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2020-11-07 06:35:42,826 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2020-11-07 06:35:42,826 INFO L262 CegarLoopResult]: At program point L10-2(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2020-11-07 06:35:42,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:35:42 BoogieIcfgContainer
[2020-11-07 06:35:42,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-07 06:35:42,846 INFO L168 Benchmark]: Toolchain (without parser) took 3191.34 ms. Allocated memory is still 161.5 MB. Free memory was 137.6 MB in the beginning and 121.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 8.0 GB.
[2020-11-07 06:35:42,847 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory is still 82.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-07 06:35:42,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.47 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 127.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2020-11-07 06:35:42,850 INFO L168 Benchmark]: Boogie Preprocessor took 55.28 ms. Allocated memory is still 161.5 MB. Free memory was 127.3 MB in the beginning and 125.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-11-07 06:35:42,851 INFO L168 Benchmark]: RCFGBuilder took 754.74 ms. Allocated memory is still 161.5 MB. Free memory was 125.8 MB in the beginning and 108.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
[2020-11-07 06:35:42,852 INFO L168 Benchmark]: TraceAbstraction took 2029.23 ms. Allocated memory is still 161.5 MB. Free memory was 107.6 MB in the beginning and 121.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 8.0 GB.
[2020-11-07 06:35:42,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory is still 82.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 338.47 ms. Allocated memory is still 161.5 MB. Free memory was 137.0 MB in the beginning and 127.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 55.28 ms. Allocated memory is still 161.5 MB. Free memory was 127.3 MB in the beginning and 125.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 754.74 ms. Allocated memory is still 161.5 MB. Free memory was 125.8 MB in the beginning and 108.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 2029.23 ms. Allocated memory is still 161.5 MB. Free memory was 107.6 MB in the beginning and 121.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- ProcedureContractResult [Line: 3]: Procedure Contract for reach_error
Derived contract for procedure reach_error: 1
- ProcedureContractResult [Line: 18]: Procedure Contract for foo
Derived contract for procedure foo: 1
- ProcedureContractResult [Line: 27]: Procedure Contract for main
Derived contract for procedure main: 1
- ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert
Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 7 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 55 SDslu, 57 SDs, 0 SdLazy, 164 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred 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, 67 LocationsWithAnnotation, 89 PreInvPairs, 98 NumberOfFragments, 124 HoareAnnotationTreeSize, 89 FomulaSimplifications, 70 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 67 FomulaSimplificationsInter, 1434 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 2448 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...