/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/ldv-regression/test24-1.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-b7b32d2
[2021-02-21 20:39:02,915 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-21 20:39:02,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-21 20:39:02,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-21 20:39:02,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-21 20:39:02,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2021-02-21 20:39:03,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-21 20:39:03,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-21 20:39:03,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-21 20:39:03,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-21 20:39:03,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-21 20:39:03,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-21 20:39:03,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-21 20:39:03,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-21 20:39:03,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2021-02-21 20:39:03,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2021-02-21 20:39:03,086 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-21 20:39:03,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-21 20:39:03,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-21 20:39:03,088 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-21 20:39:03,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-21 20:39:03,089 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-21 20:39:03,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-21 20:39:03,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-21 20:39:03,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-21 20:39:03,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-21 20:39:03,090 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-21 20:39:03,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-21 20:39:03,090 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-21 20:39:03,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-21 20:39:03,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-21 20:39:03,091 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-21 20:39:03,091 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-21 20:39:03,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-21 20:39:03,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-21 20:39:03,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-21 20:39:03,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-21 20:39:03,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-21 20:39:03,092 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-21 20:39:03,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-21 20:39:03,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-21 20:39:03,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-21 20:39:03,492 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-21 20:39:03,493 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-21 20:39:03,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c
[2021-02-21 20:39:03,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8fe233ce/7cac3436eed74ef4b01f2e65405aec75/FLAGaffb7eab8
[2021-02-21 20:39:04,190 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-21 20:39:04,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c
[2021-02-21 20:39:04,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8fe233ce/7cac3436eed74ef4b01f2e65405aec75/FLAGaffb7eab8
[2021-02-21 20:39:04,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8fe233ce/7cac3436eed74ef4b01f2e65405aec75
[2021-02-21 20:39:04,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-21 20:39:04,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-21 20:39:04,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-21 20:39:04,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-21 20:39:04,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-21 20:39:04,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c2d738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04, skipping insertion in model container
[2021-02-21 20:39:04,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-21 20:39:04,654 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-21 20:39:04,879 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/test24-1.c[704,717]
[2021-02-21 20:39:04,883 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-21 20:39:04,891 INFO L203 MainTranslator]: Completed pre-run
[2021-02-21 20:39:04,910 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/test24-1.c[704,717]
[2021-02-21 20:39:04,912 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-21 20:39:04,927 INFO L208 MainTranslator]: Completed translation
[2021-02-21 20:39:04,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04 WrapperNode
[2021-02-21 20:39:04,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-21 20:39:04,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-21 20:39:04,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-21 20:39:04,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-21 20:39:04,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (1/1) ...
[2021-02-21 20:39:04,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-21 20:39:04,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-21 20:39:04,967 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-21 20:39:04,967 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-21 20:39:04,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (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
[2021-02-21 20:39:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-21 20:39:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-21 20:39:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-21 20:39:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure check
[2021-02-21 20:39:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-21 20:39:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-21 20:39:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-21 20:39:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-21 20:39:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-21 20:39:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-21 20:39:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure check
[2021-02-21 20:39:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-21 20:39:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-21 20:39:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-21 20:39:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-21 20:39:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-21 20:39:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-21 20:39:05,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-21 20:39:05,462 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-21 20:39:05,462 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-02-21 20:39:05,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:39:05 BoogieIcfgContainer
[2021-02-21 20:39:05,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-21 20:39:05,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-21 20:39:05,467 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-21 20:39:05,472 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-21 20:39:05,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:39:04" (1/3) ...
[2021-02-21 20:39:05,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72745465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:39:05, skipping insertion in model container
[2021-02-21 20:39:05,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:04" (2/3) ...
[2021-02-21 20:39:05,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72745465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:39:05, skipping insertion in model container
[2021-02-21 20:39:05,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:39:05" (3/3) ...
[2021-02-21 20:39:05,478 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c
[2021-02-21 20:39:05,486 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-21 20:39:05,492 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-21 20:39:05,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-21 20:39:05,557 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-21 20:39:05,558 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-21 20:39:05,558 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-21 20:39:05,558 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-21 20:39:05,558 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-21 20:39:05,559 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-21 20:39:05,559 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-21 20:39:05,559 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-21 20:39:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states.
[2021-02-21 20:39:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2021-02-21 20:39:05,599 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 20:39:05,600 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, 1, 1, 1, 1]
[2021-02-21 20:39:05,601 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 20:39:05,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 20:39:05,610 INFO L82 PathProgramCache]: Analyzing trace with hash 48956364, now seen corresponding path program 1 times
[2021-02-21 20:39:05,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-21 20:39:05,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569792436]
[2021-02-21 20:39:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 20:39:05,725 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-21 20:39:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:06,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:06,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:06,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 20:39:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:06,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2021-02-21 20:39:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:06,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,190 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 20:39:06,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569792436]
[2021-02-21 20:39:06,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 20:39:06,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-21 20:39:06,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433034662]
[2021-02-21 20:39:06,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-21 20:39:06,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-21 20:39:06,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-21 20:39:06,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-21 20:39:06,228 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states.
[2021-02-21 20:39:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 20:39:06,419 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions.
[2021-02-21 20:39:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-02-21 20:39:06,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39
[2021-02-21 20:39:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 20:39:06,431 INFO L225 Difference]: With dead ends: 79
[2021-02-21 20:39:06,431 INFO L226 Difference]: Without dead ends: 46
[2021-02-21 20:39:06,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-21 20:39:06,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-02-21 20:39:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2021-02-21 20:39:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2021-02-21 20:39:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions.
[2021-02-21 20:39:06,487 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 39
[2021-02-21 20:39:06,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-21 20:39:06,488 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions.
[2021-02-21 20:39:06,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-02-21 20:39:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions.
[2021-02-21 20:39:06,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2021-02-21 20:39:06,490 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 20:39:06,490 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, 1, 1, 1, 1, 1, 1]
[2021-02-21 20:39:06,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-21 20:39:06,491 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 20:39:06,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 20:39:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash 2070724129, now seen corresponding path program 1 times
[2021-02-21 20:39:06,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-21 20:39:06,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487306379]
[2021-02-21 20:39:06,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 20:39:06,495 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-21 20:39:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:06,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:06,629 WARN L141 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size
[2021-02-21 20:39:06,630 WARN L147 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size 7
[2021-02-21 20:39:06,642 WARN L141 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size
[2021-02-21 20:39:06,644 WARN L147 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size 23
[2021-02-21 20:39:06,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 20:39:06,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-02-21 20:39:06,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-02-21 20:39:06,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 20:39:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:06,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2021-02-21 20:39:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:06,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:06,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 20:39:06,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487306379]
[2021-02-21 20:39:06,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 20:39:06,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2021-02-21 20:39:06,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676157018]
[2021-02-21 20:39:06,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-02-21 20:39:06,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-21 20:39:06,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-02-21 20:39:06,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2021-02-21 20:39:06,793 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 8 states.
[2021-02-21 20:39:07,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 20:39:07,150 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions.
[2021-02-21 20:39:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2021-02-21 20:39:07,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41
[2021-02-21 20:39:07,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 20:39:07,153 INFO L225 Difference]: With dead ends: 65
[2021-02-21 20:39:07,153 INFO L226 Difference]: Without dead ends: 51
[2021-02-21 20:39:07,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2021-02-21 20:39:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2021-02-21 20:39:07,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48.
[2021-02-21 20:39:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2021-02-21 20:39:07,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions.
[2021-02-21 20:39:07,171 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 41
[2021-02-21 20:39:07,171 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-21 20:39:07,172 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions.
[2021-02-21 20:39:07,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2021-02-21 20:39:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions.
[2021-02-21 20:39:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2021-02-21 20:39:07,174 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-21 20:39:07,174 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-21 20:39:07,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-21 20:39:07,175 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-21 20:39:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-21 20:39:07,176 INFO L82 PathProgramCache]: Analyzing trace with hash -2025427239, now seen corresponding path program 1 times
[2021-02-21 20:39:07,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-21 20:39:07,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856771151]
[2021-02-21 20:39:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-21 20:39:07,204 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found.
[2021-02-21 20:39:07,206 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-21 20:39:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:07,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:07,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 20:39:07,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15
[2021-02-21 20:39:07,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22
[2021-02-21 20:39:07,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23
[2021-02-21 20:39:07,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22
[2021-02-21 20:39:07,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70
[2021-02-21 20:39:07,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62
[2021-02-21 20:39:07,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38
[2021-02-21 20:39:07,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15
[2021-02-21 20:39:07,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-21 20:39:07,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:07,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-21 20:39:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:07,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-21 20:39:07,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35
[2021-02-21 20:39:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-21 20:39:07,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-21 20:39:07,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10
[2021-02-21 20:39:07,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15
[2021-02-21 20:39:07,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-21 20:39:07,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16
[2021-02-21 20:39:07,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-21 20:39:07,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856771151]
[2021-02-21 20:39:07,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-21 20:39:07,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16
[2021-02-21 20:39:07,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730858501]
[2021-02-21 20:39:07,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states
[2021-02-21 20:39:07,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-21 20:39:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-02-21 20:39:07,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240
[2021-02-21 20:39:07,853 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 16 states.
[2021-02-21 20:39:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-21 20:39:08,520 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions.
[2021-02-21 20:39:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-02-21 20:39:08,520 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47
[2021-02-21 20:39:08,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-21 20:39:08,521 INFO L225 Difference]: With dead ends: 48
[2021-02-21 20:39:08,521 INFO L226 Difference]: Without dead ends: 0
[2021-02-21 20:39:08,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702
[2021-02-21 20:39:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-02-21 20:39:08,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-02-21 20:39:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-02-21 20:39:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-02-21 20:39:08,524 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47
[2021-02-21 20:39:08,524 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-21 20:39:08,524 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-02-21 20:39:08,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2021-02-21 20:39:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-02-21 20:39:08,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-02-21 20:39:08,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-02-21 20:39:08,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-02-21 20:39:09,159 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed.
[2021-02-21 20:39:09,160 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed.
[2021-02-21 20:39:09,160 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed.
[2021-02-21 20:39:09,160 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true
[2021-02-21 20:39:09,160 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true
[2021-02-21 20:39:09,161 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-21 20:39:09,161 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true
[2021-02-21 20:39:09,161 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true
[2021-02-21 20:39:09,161 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true
[2021-02-21 20:39:09,161 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|))
[2021-02-21 20:39:09,162 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true
[2021-02-21 20:39:09,162 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true
[2021-02-21 20:39:09,162 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2021-02-21 20:39:09,162 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2021-02-21 20:39:09,162 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-21 20:39:09,162 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2021-02-21 20:39:09,162 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2021-02-21 20:39:09,163 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= 1 |main_#t~ret12|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))
[2021-02-21 20:39:09,163 INFO L185 CegarLoopUtils]: At program point L31-1(lines 31 33) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= 1 |main_#t~ret12|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))
[2021-02-21 20:39:09,163 INFO L185 CegarLoopUtils]: At program point L31-2(line 31) the Hoare annotation is: false
[2021-02-21 20:39:09,163 INFO L192 CegarLoopUtils]: At program point L31-3(line 31) the Hoare annotation is: true
[2021-02-21 20:39:09,164 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (= (+ (* main_~i~0 8) main_~ad2~0.offset) main_~pa~0.offset) (= |main_~#ad1~0.offset| 0) (= main_~pa~0.base main_~ad2~0.base) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))
[2021-02-21 20:39:09,164 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= (+ (* main_~i~0 8) main_~ad2~0.offset) main_~pa~0.offset) (= |main_#t~mem9| .cse0) (= |main_~#ad1~0.offset| 0) (= main_~pa~0.base main_~ad2~0.base) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 .cse0)))
[2021-02-21 20:39:09,164 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem9| .cse0) (= |main_~#ad1~0.offset| 0) (<= (+ main_~i~0 10) .cse0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)))
[2021-02-21 20:39:09,165 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 16 40) the Hoare annotation is: true
[2021-02-21 20:39:09,165 INFO L185 CegarLoopUtils]: At program point L23(lines 23 34) the Hoare annotation is: (= |main_~#ad1~0.offset| 0)
[2021-02-21 20:39:09,165 INFO L192 CegarLoopUtils]: At program point L23-2(lines 23 34) the Hoare annotation is: true
[2021-02-21 20:39:09,165 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0)
[2021-02-21 20:39:09,165 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0)
[2021-02-21 20:39:09,165 INFO L185 CegarLoopUtils]: At program point L32(lines 17 40) the Hoare annotation is: false
[2021-02-21 20:39:09,166 INFO L185 CegarLoopUtils]: At program point L28-1(lines 28 30) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| .cse0)))
[2021-02-21 20:39:09,166 INFO L185 CegarLoopUtils]: At program point L28-2(line 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| .cse0) (= main_~i~0 .cse0)))
[2021-02-21 20:39:09,166 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (= |main_~#ad1~0.offset| 0)
[2021-02-21 20:39:09,167 INFO L185 CegarLoopUtils]: At program point L28-4(line 28) the Hoare annotation is: (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (<= (+ main_~i~0 1) |main_#t~mem10|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))
[2021-02-21 20:39:09,167 INFO L185 CegarLoopUtils]: At program point L28-5(lines 28 30) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)))
[2021-02-21 20:39:09,167 INFO L185 CegarLoopUtils]: At program point L28-6(lines 28 30) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))
[2021-02-21 20:39:09,167 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)))
[2021-02-21 20:39:09,168 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)))
[2021-02-21 20:39:09,168 INFO L185 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0)))
[2021-02-21 20:39:09,168 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base))
[2021-02-21 20:39:09,168 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base))
[2021-02-21 20:39:09,169 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0)
[2021-02-21 20:39:09,169 INFO L185 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0)
[2021-02-21 20:39:09,169 INFO L185 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0)
[2021-02-21 20:39:09,169 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 16 40) the Hoare annotation is: true
[2021-02-21 20:39:09,169 INFO L185 CegarLoopUtils]: At program point L38(line 38) the Hoare annotation is: false
[2021-02-21 20:39:09,170 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) the Hoare annotation is: false
[2021-02-21 20:39:09,170 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 16 40) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|))
[2021-02-21 20:39:09,170 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (= |main_~#ad1~0.offset| 0)
[2021-02-21 20:39:09,170 INFO L192 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: true
[2021-02-21 20:39:09,170 INFO L192 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: true
[2021-02-21 20:39:09,171 INFO L185 CegarLoopUtils]: At program point L18-3(line 18) the Hoare annotation is: false
[2021-02-21 20:39:09,171 INFO L185 CegarLoopUtils]: At program point L18-4(line 18) the Hoare annotation is: false
[2021-02-21 20:39:09,171 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: false
[2021-02-21 20:39:09,171 INFO L192 CegarLoopUtils]: At program point checkENTRY(lines 11 14) the Hoare annotation is: true
[2021-02-21 20:39:09,171 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#in~b| check_~b))
[2021-02-21 20:39:09,172 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#t~mem7| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b))
[2021-02-21 20:39:09,172 INFO L185 CegarLoopUtils]: At program point L11(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|))
[2021-02-21 20:39:09,172 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |check_#in~ad1.base|))) (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select .cse0 (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#t~mem7| (select .cse0 (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b)))
[2021-02-21 20:39:09,172 INFO L185 CegarLoopUtils]: At program point checkFINAL(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#in~b| check_~b))
[2021-02-21 20:39:09,172 INFO L185 CegarLoopUtils]: At program point checkEXIT(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#in~b| check_~b))
[2021-02-21 20:39:09,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:39:09 BoogieIcfgContainer
[2021-02-21 20:39:09,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-21 20:39:09,197 INFO L168 Benchmark]: Toolchain (without parser) took 4601.97 ms. Allocated memory was 156.2 MB in the beginning and 202.4 MB in the end (delta: 46.1 MB). Free memory was 131.7 MB in the beginning and 120.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB.
[2021-02-21 20:39:09,198 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 156.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-21 20:39:09,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.77 ms. Allocated memory is still 156.2 MB. Free memory was 130.5 MB in the beginning and 121.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-02-21 20:39:09,199 INFO L168 Benchmark]: Boogie Preprocessor took 36.29 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-02-21 20:39:09,200 INFO L168 Benchmark]: RCFGBuilder took 499.33 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 137.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB.
[2021-02-21 20:39:09,201 INFO L168 Benchmark]: TraceAbstraction took 3728.13 ms. Allocated memory was 156.2 MB in the beginning and 202.4 MB in the end (delta: 46.1 MB). Free memory was 136.9 MB in the beginning and 120.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 116.3 MB. Max. memory is 8.0 GB.
[2021-02-21 20:39:09,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.00 ms. Allocated memory is still 156.2 MB. Free memory is still 130.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 314.77 ms. Allocated memory is still 156.2 MB. Free memory was 130.5 MB in the beginning and 121.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 36.29 ms. Allocated memory is still 156.2 MB. Free memory was 121.0 MB in the beginning and 119.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 499.33 ms. Allocated memory is still 156.2 MB. Free memory was 119.3 MB in the beginning and 137.4 MB in the end (delta: -18.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 3728.13 ms. Allocated memory was 156.2 MB in the beginning and 202.4 MB in the end (delta: 46.1 MB). Free memory was 136.9 MB in the beginning and 120.7 MB in the end (delta: 16.2 MB). Peak memory consumption was 116.3 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 38]: 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
- InvariantResult [Line: 28]: Loop Invariant
Derived loop invariant: (((ad1 == 0 && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa]) && ad1 == ad2) && ad1 == ad2) && unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] == unknown-#memory_int-unknown[pa][pa]
- InvariantResult [Line: 17]: Loop Invariant
Derived loop invariant: 0
- ProcedureContractResult [Line: 16]: Procedure Contract for main
Derived contract for procedure main: 1
- ProcedureContractResult [Line: 11]: Procedure Contract for check
Derived contract for procedure check: ((ad1 == ad1 && ad1 == ad1) && (!(\old(b) == unknown-#memory_int-unknown[ad1][ad1 + \old(b) * 8]) || 1 <= \result)) && \old(b) == b
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 120 SDtfs, 71 SDslu, 322 SDs, 0 SdLazy, 426 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 58 LocationsWithAnnotation, 72 PreInvPairs, 86 NumberOfFragments, 706 HoareAnnotationTreeSize, 72 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 58 FomulaSimplificationsInter, 347 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, 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 correct!
Received shutdown request...