/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_15-1.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-24 04:17:42,870 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-24 04:17:42,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-24 04:17:42,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-24 04:17:42,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-24 04:17:42,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-24 04:17:42,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-24 04:17:42,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-24 04:17:42,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-24 04:17:42,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-02-24 04:17:42,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-02-24 04:17:42,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-24 04:17:42,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-24 04:17:42,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-24 04:17:42,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-24 04:17:42,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-24 04:17:42,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-24 04:17:42,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-24 04:17:42,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-24 04:17:42,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-24 04:17:42,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-24 04:17:42,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-24 04:17:42,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-24 04:17:42,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-24 04:17:42,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-02-24 04:17:42,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-02-24 04:17:42,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-02-24 04:17:42,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-02-24 04:17:42,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-02-24 04:17:42,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-02-24 04:17:42,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-02-24 04:17:42,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-02-24 04:17:42,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-02-24 04:17:42,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-02-24 04:17:42,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-02-24 04:17:42,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-02-24 04:17:42,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-02-24 04:17:42,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-02-24 04:17:42,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-02-24 04:17:42,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-02-24 04:17:42,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-24 04:17:42,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf
[2021-02-24 04:17:42,997 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-24 04:17:42,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-24 04:17:42,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-24 04:17:43,000 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-24 04:17:43,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-24 04:17:43,000 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-24 04:17:43,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-24 04:17:43,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-24 04:17:43,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-24 04:17:43,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-24 04:17:43,002 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-24 04:17:43,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-24 04:17:43,003 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-24 04:17:43,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-24 04:17:43,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-24 04:17:43,003 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-24 04:17:43,004 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-24 04:17:43,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-24 04:17:43,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-24 04:17:43,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-24 04:17:43,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-24 04:17:43,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-24 04:17:43,006 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX
[2021-02-24 04:17:43,006 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-24 04:17:43,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-24 04:17:43,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-24 04:17:43,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-24 04:17:43,456 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-24 04:17:43,457 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-24 04:17:43,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-1.c
[2021-02-24 04:17:43,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ccf0e05/eb70f56a81194a588d006f118ccb20ff/FLAGa2bd63d1a
[2021-02-24 04:17:44,146 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-24 04:17:44,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-1.c
[2021-02-24 04:17:44,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ccf0e05/eb70f56a81194a588d006f118ccb20ff/FLAGa2bd63d1a
[2021-02-24 04:17:44,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0ccf0e05/eb70f56a81194a588d006f118ccb20ff
[2021-02-24 04:17:44,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-24 04:17:44,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-24 04:17:44,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-24 04:17:44,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-24 04:17:44,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-24 04:17:44,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:44,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bbf851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44, skipping insertion in model container
[2021-02-24 04:17:44,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:44,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-24 04:17:44,599 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-24 04:17:44,782 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-1.c[5654,5667]
[2021-02-24 04:17:44,796 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 04:17:44,813 INFO L203 MainTranslator]: Completed pre-run
[2021-02-24 04:17:44,888 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-1.c[5654,5667]
[2021-02-24 04:17:44,893 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 04:17:44,933 INFO L208 MainTranslator]: Completed translation
[2021-02-24 04:17:44,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44 WrapperNode
[2021-02-24 04:17:44,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-24 04:17:44,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-24 04:17:44,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-24 04:17:44,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-24 04:17:44,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:44,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:44,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:44,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:44,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:44,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:44,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (1/1) ...
[2021-02-24 04:17:45,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-24 04:17:45,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-24 04:17:45,012 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-24 04:17:45,012 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-24 04:17:45,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (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
[2021-02-24 04:17:45,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-24 04:17:45,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-24 04:17:45,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-24 04:17:45,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-24 04:17:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-24 04:17:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-24 04:17:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-24 04:17:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-24 04:17:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-24 04:17:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-24 04:17:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-24 04:17:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-24 04:17:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-24 04:17:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-24 04:17:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-24 04:17:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-24 04:17:45,697 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-24 04:17:45,698 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-02-24 04:17:45,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:17:45 BoogieIcfgContainer
[2021-02-24 04:17:45,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-24 04:17:45,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-24 04:17:45,703 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-24 04:17:45,707 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-24 04:17:45,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:17:44" (1/3) ...
[2021-02-24 04:17:45,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:17:45, skipping insertion in model container
[2021-02-24 04:17:45,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:17:44" (2/3) ...
[2021-02-24 04:17:45,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:17:45, skipping insertion in model container
[2021-02-24 04:17:45,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:17:45" (3/3) ...
[2021-02-24 04:17:45,711 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-1.c
[2021-02-24 04:17:45,719 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-24 04:17:45,725 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-24 04:17:45,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-24 04:17:45,773 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-24 04:17:45,773 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-24 04:17:45,773 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-24 04:17:45,773 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-24 04:17:45,774 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-24 04:17:45,774 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-24 04:17:45,774 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-24 04:17:45,774 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-24 04:17:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states.
[2021-02-24 04:17:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2021-02-24 04:17:45,823 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:17:45,825 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, 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, 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]
[2021-02-24 04:17:45,826 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:17:45,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:17:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash -733530489, now seen corresponding path program 1 times
[2021-02-24 04:17:45,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:17:45,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412318288]
[2021-02-24 04:17:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:17:45,923 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:17:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:17:46,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:17:46,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:17:46,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:17:46,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-24 04:17:46,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:17:46,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:17:46,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 04:17:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:17:46,354 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:17:46,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:17:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-24 04:17:46,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412318288]
[2021-02-24 04:17:46,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 04:17:46,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-24 04:17:46,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118099816]
[2021-02-24 04:17:46,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-24 04:17:46,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 04:17:46,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-24 04:17:46,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-24 04:17:46,437 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states.
[2021-02-24 04:17:47,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 04:17:47,262 INFO L93 Difference]: Finished difference Result 376 states and 517 transitions.
[2021-02-24 04:17:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-02-24 04:17:47,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111
[2021-02-24 04:17:47,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 04:17:47,297 INFO L225 Difference]: With dead ends: 376
[2021-02-24 04:17:47,297 INFO L226 Difference]: Without dead ends: 264
[2021-02-24 04:17:47,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-02-24 04:17:47,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states.
[2021-02-24 04:17:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262.
[2021-02-24 04:17:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states.
[2021-02-24 04:17:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 348 transitions.
[2021-02-24 04:17:47,465 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 348 transitions. Word has length 111
[2021-02-24 04:17:47,466 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 04:17:47,467 INFO L480 AbstractCegarLoop]: Abstraction has 262 states and 348 transitions.
[2021-02-24 04:17:47,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-24 04:17:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 348 transitions.
[2021-02-24 04:17:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2021-02-24 04:17:47,478 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:17:47,478 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, 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, 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]
[2021-02-24 04:17:47,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-24 04:17:47,481 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:17:47,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:17:47,482 INFO L82 PathProgramCache]: Analyzing trace with hash -733522274, now seen corresponding path program 1 times
[2021-02-24 04:17:47,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:17:47,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131830381]
[2021-02-24 04:17:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:17:47,492 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:17:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-24 04:17:47,573 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-24 04:17:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-02-24 04:17:47,630 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-02-24 04:17:47,688 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2021-02-24 04:17:47,689 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-24 04:17:47,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-24 04:17:47,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:17:47 BoogieIcfgContainer
[2021-02-24 04:17:47,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-24 04:17:47,713 INFO L168 Benchmark]: Toolchain (without parser) took 3190.99 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 128.4 MB in the beginning and 142.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB.
[2021-02-24 04:17:47,714 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 127.7 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-24 04:17:47,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.17 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 116.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
[2021-02-24 04:17:47,716 INFO L168 Benchmark]: Boogie Preprocessor took 65.21 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-02-24 04:17:47,717 INFO L168 Benchmark]: RCFGBuilder took 689.03 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 113.4 MB in the end (delta: 859.4 kB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB.
[2021-02-24 04:17:47,718 INFO L168 Benchmark]: TraceAbstraction took 2008.84 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 113.4 MB in the beginning and 142.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 2.0 MB. Max. memory is 8.0 GB.
[2021-02-24 04:17:47,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 127.7 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 394.17 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 116.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 65.21 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 689.03 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 113.4 MB in the end (delta: 859.4 kB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 2008.84 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 113.4 MB in the beginning and 142.3 MB in the end (delta: -28.9 MB). Peak memory consumption was 2.0 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 233]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L8] int p1 = __VERIFIER_nondet_int();
[L9] int lk1;
[L11] int p2 = __VERIFIER_nondet_int();
[L12] int lk2;
[L14] int p3 = __VERIFIER_nondet_int();
[L15] int lk3;
[L17] int p4 = __VERIFIER_nondet_int();
[L18] int lk4;
[L20] int p5 = __VERIFIER_nondet_int();
[L21] int lk5;
[L23] int p6 = __VERIFIER_nondet_int();
[L24] int lk6;
[L26] int p7 = __VERIFIER_nondet_int();
[L27] int lk7;
[L29] int p8 = __VERIFIER_nondet_int();
[L30] int lk8;
[L32] int p9 = __VERIFIER_nondet_int();
[L33] int lk9;
[L35] int p10 = __VERIFIER_nondet_int();
[L36] int lk10;
[L38] int p11 = __VERIFIER_nondet_int();
[L39] int lk11;
[L41] int p12 = __VERIFIER_nondet_int();
[L42] int lk12;
[L44] int p13 = __VERIFIER_nondet_int();
[L45] int lk13;
[L47] int p14 = __VERIFIER_nondet_int();
[L48] int lk14;
[L50] int p15 = __VERIFIER_nondet_int();
[L51] int lk15;
[L54] int cond;
[L56] COND TRUE 1
[L57] cond = __VERIFIER_nondet_int()
[L58] COND FALSE !(cond == 0)
[L61] lk1 = 0
[L63] lk2 = 0
[L65] lk3 = 0
[L67] lk4 = 0
[L69] lk5 = 0
[L71] lk6 = 0
[L73] lk7 = 0
[L75] lk8 = 0
[L77] lk9 = 0
[L79] lk10 = 0
[L81] lk11 = 0
[L83] lk12 = 0
[L85] lk13 = 0
[L87] lk14 = 0
[L89] lk15 = 0
[L93] COND FALSE !(p1 != 0)
[L97] COND FALSE !(p2 != 0)
[L101] COND FALSE !(p3 != 0)
[L105] COND FALSE !(p4 != 0)
[L109] COND FALSE !(p5 != 0)
[L113] COND FALSE !(p6 != 0)
[L117] COND FALSE !(p7 != 0)
[L121] COND FALSE !(p8 != 0)
[L125] COND FALSE !(p9 != 0)
[L129] COND FALSE !(p10 != 0)
[L133] COND FALSE !(p11 != 0)
[L137] COND FALSE !(p12 != 0)
[L141] COND FALSE !(p13 != 0)
[L145] COND FALSE !(p14 != 0)
[L149] COND FALSE !(p15 != 0)
[L155] COND FALSE !(p1 != 0)
[L160] COND FALSE !(p2 != 0)
[L233] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 180 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 442 SDslu, 19 SDs, 0 SdLazy, 214 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...