/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/loop-lit/ddlm2013.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-24 04:49:08,741 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-24 04:49:08,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-24 04:49:08,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-24 04:49:08,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-24 04:49:08,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-24 04:49:08,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-24 04:49:08,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-02-24 04:49:08,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-02-24 04:49:08,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2021-02-24 04:49:08,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-02-24 04:49:08,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-02-24 04:49:08,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-02-24 04:49:08,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-02-24 04:49:08,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-24 04:49:08,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-24 04:49:08,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-24 04:49:08,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-24 04:49:08,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-24 04:49:08,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-24 04:49:08,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-24 04:49:08,865 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-24 04:49:08,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-24 04:49:08,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-24 04:49:08,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-02-24 04:49:08,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-02-24 04:49:08,893 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 04:49:08,918 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-24 04:49:08,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-24 04:49:08,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-24 04:49:08,923 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-24 04:49:08,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-24 04:49:08,923 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-24 04:49:08,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-24 04:49:08,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-24 04:49:08,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-24 04:49:08,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-24 04:49:08,925 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-24 04:49:08,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-24 04:49:08,926 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-24 04:49:08,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-24 04:49:08,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-24 04:49:08,928 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-24 04:49:08,928 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-24 04:49:08,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-24 04:49:08,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-24 04:49:08,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-24 04:49:08,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-24 04:49:08,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-24 04:49:08,929 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX
[2021-02-24 04:49:08,930 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-02-24 04:49:09,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-24 04:49:09,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-24 04:49:09,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-24 04:49:09,413 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-24 04:49:09,414 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-24 04:49:09,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i
[2021-02-24 04:49:09,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae3bd9d6/cf0cdfd3f6e2487886b6a83da57ee57a/FLAG0da7c8668
[2021-02-24 04:49:10,183 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-24 04:49:10,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i
[2021-02-24 04:49:10,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae3bd9d6/cf0cdfd3f6e2487886b6a83da57ee57a/FLAG0da7c8668
[2021-02-24 04:49:10,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ae3bd9d6/cf0cdfd3f6e2487886b6a83da57ee57a
[2021-02-24 04:49:10,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-24 04:49:10,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-24 04:49:10,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-24 04:49:10,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-24 04:49:10,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-24 04:49:10,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25ed785a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10, skipping insertion in model container
[2021-02-24 04:49:10,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-24 04:49:10,577 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-24 04:49:10,766 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i[895,908]
[2021-02-24 04:49:10,782 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 04:49:10,792 INFO L203 MainTranslator]: Completed pre-run
[2021-02-24 04:49:10,808 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i[895,908]
[2021-02-24 04:49:10,813 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 04:49:10,830 INFO L208 MainTranslator]: Completed translation
[2021-02-24 04:49:10,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10 WrapperNode
[2021-02-24 04:49:10,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-24 04:49:10,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-24 04:49:10,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-24 04:49:10,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-24 04:49:10,848 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (1/1) ...
[2021-02-24 04:49:10,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-24 04:49:10,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-24 04:49:10,874 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-24 04:49:10,874 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-24 04:49:10,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (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 04:49:10,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-24 04:49:10,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-24 04:49:10,983 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-24 04:49:10,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-02-24 04:49:10,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-02-24 04:49:10,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-24 04:49:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-24 04:49:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-24 04:49:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-02-24 04:49:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2021-02-24 04:49:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-24 04:49:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-24 04:49:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-02-24 04:49:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-02-24 04:49:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-02-24 04:49:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-24 04:49:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-24 04:49:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-24 04:49:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-24 04:49:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-24 04:49:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-24 04:49:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-24 04:49:11,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-24 04:49:11,469 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-02-24 04:49:11,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:49:11 BoogieIcfgContainer
[2021-02-24 04:49:11,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-24 04:49:11,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-24 04:49:11,474 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-24 04:49:11,477 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-24 04:49:11,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:49:10" (1/3) ...
[2021-02-24 04:49:11,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36affe70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:49:11, skipping insertion in model container
[2021-02-24 04:49:11,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:10" (2/3) ...
[2021-02-24 04:49:11,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36affe70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:49:11, skipping insertion in model container
[2021-02-24 04:49:11,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:49:11" (3/3) ...
[2021-02-24 04:49:11,482 INFO L111 eAbstractionObserver]: Analyzing ICFG ddlm2013.i
[2021-02-24 04:49:11,489 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-24 04:49:11,496 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-24 04:49:11,518 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-24 04:49:11,555 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-24 04:49:11,555 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-24 04:49:11,555 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2021-02-24 04:49:11,556 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-24 04:49:11,556 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-24 04:49:11,556 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-24 04:49:11,556 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-24 04:49:11,556 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-24 04:49:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states.
[2021-02-24 04:49:11,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2021-02-24 04:49:11,591 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:49:11,592 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]
[2021-02-24 04:49:11,593 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:49:11,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:49:11,603 INFO L82 PathProgramCache]: Analyzing trace with hash 938281063, now seen corresponding path program 1 times
[2021-02-24 04:49:11,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:49:11,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997385206]
[2021-02-24 04:49:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:49:11,729 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:49:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:49:11,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:11,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:11,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:11,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 04:49:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:49:12,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:12,011 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 04:49:12,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997385206]
[2021-02-24 04:49:12,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 04:49:12,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-02-24 04:49:12,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487077227]
[2021-02-24 04:49:12,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-02-24 04:49:12,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 04:49:12,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-02-24 04:49:12,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-24 04:49:12,040 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states.
[2021-02-24 04:49:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 04:49:12,149 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions.
[2021-02-24 04:49:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-02-24 04:49:12,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29
[2021-02-24 04:49:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 04:49:12,162 INFO L225 Difference]: With dead ends: 65
[2021-02-24 04:49:12,162 INFO L226 Difference]: Without dead ends: 44
[2021-02-24 04:49:12,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-02-24 04:49:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2021-02-24 04:49:12,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2021-02-24 04:49:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2021-02-24 04:49:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions.
[2021-02-24 04:49:12,225 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 29
[2021-02-24 04:49:12,226 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 04:49:12,226 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions.
[2021-02-24 04:49:12,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2021-02-24 04:49:12,227 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions.
[2021-02-24 04:49:12,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-02-24 04:49:12,231 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:49:12,231 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]
[2021-02-24 04:49:12,232 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-24 04:49:12,232 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:49:12,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:49:12,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1407892642, now seen corresponding path program 1 times
[2021-02-24 04:49:12,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:49:12,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543157434]
[2021-02-24 04:49:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:49:12,242 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:49:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:49:12,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:12,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-24 04:49:12,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:12,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 04:49:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:49:12,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:12,363 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 04:49:12,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543157434]
[2021-02-24 04:49:12,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 04:49:12,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-02-24 04:49:12,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498756789]
[2021-02-24 04:49:12,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-02-24 04:49:12,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 04:49:12,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-02-24 04:49:12,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-02-24 04:49:12,367 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 4 states.
[2021-02-24 04:49:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 04:49:12,612 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions.
[2021-02-24 04:49:12,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-02-24 04:49:12,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31
[2021-02-24 04:49:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 04:49:12,615 INFO L225 Difference]: With dead ends: 64
[2021-02-24 04:49:12,615 INFO L226 Difference]: Without dead ends: 43
[2021-02-24 04:49:12,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-02-24 04:49:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2021-02-24 04:49:12,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2021-02-24 04:49:12,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2021-02-24 04:49:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions.
[2021-02-24 04:49:12,630 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 31
[2021-02-24 04:49:12,630 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 04:49:12,631 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions.
[2021-02-24 04:49:12,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2021-02-24 04:49:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions.
[2021-02-24 04:49:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-02-24 04:49:12,632 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:49:12,633 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]
[2021-02-24 04:49:12,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-24 04:49:12,633 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:49:12,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:49:12,634 INFO L82 PathProgramCache]: Analyzing trace with hash 309043966, now seen corresponding path program 1 times
[2021-02-24 04:49:12,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:49:12,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7614991]
[2021-02-24 04:49:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:49:12,641 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation
[2021-02-24 04:49:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:49:12,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:12,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-24 04:49:12,778 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,781 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-24 04:49:12,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-24 04:49:12,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-24 04:49:12,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:12,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 04:49:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 04:49:12,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:12,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:12,897 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 04:49:12,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7614991]
[2021-02-24 04:49:12,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 04:49:12,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-02-24 04:49:12,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089974193]
[2021-02-24 04:49:12,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-02-24 04:49:12,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 04:49:12,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-02-24 04:49:12,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-02-24 04:49:12,900 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 7 states.
[2021-02-24 04:49:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 04:49:13,398 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions.
[2021-02-24 04:49:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-02-24 04:49:13,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31
[2021-02-24 04:49:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 04:49:13,401 INFO L225 Difference]: With dead ends: 55
[2021-02-24 04:49:13,401 INFO L226 Difference]: Without dead ends: 48
[2021-02-24 04:49:13,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110
[2021-02-24 04:49:13,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-02-24 04:49:13,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45.
[2021-02-24 04:49:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2021-02-24 04:49:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2021-02-24 04:49:13,430 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 31
[2021-02-24 04:49:13,430 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 04:49:13,430 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2021-02-24 04:49:13,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2021-02-24 04:49:13,431 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2021-02-24 04:49:13,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2021-02-24 04:49:13,435 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 04:49:13,435 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]
[2021-02-24 04:49:13,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-02-24 04:49:13,436 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 04:49:13,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 04:49:13,436 INFO L82 PathProgramCache]: Analyzing trace with hash -441562392, now seen corresponding path program 1 times
[2021-02-24 04:49:13,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 04:49:13,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064440002]
[2021-02-24 04:49:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 04:49:13,539 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size
[2021-02-24 04:49:13,567 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11
[2021-02-24 04:49:13,580 WARN L141 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size
[2021-02-24 04:49:13,581 WARN L147 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size 3
[2021-02-24 04:49:13,592 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size
[2021-02-24 04:49:13,597 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11
[2021-02-24 04:49:13,603 WARN L141 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size
[2021-02-24 04:49:13,604 WARN L147 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size 3
[2021-02-24 04:49:13,606 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-02-24 04:49:13,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-02-24 04:49:13,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:13,622 WARN L141 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size
[2021-02-24 04:49:13,626 WARN L147 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size 16
[2021-02-24 04:49:13,633 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size
[2021-02-24 04:49:13,636 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11
[2021-02-24 04:49:13,640 WARN L141 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size
[2021-02-24 04:49:13,641 WARN L147 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size 3
[2021-02-24 04:49:13,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-02-24 04:49:13,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,649 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-02-24 04:49:13,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:13,656 WARN L141 QuantifierPusher]: treesize reduction 17, result has 45.2 percent of original size
[2021-02-24 04:49:13,659 WARN L147 QuantifierPusher]: treesize reduction 17, result has 45.2 percent of original size 14
[2021-02-24 04:49:13,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-02-24 04:49:13,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6
[2021-02-24 04:49:13,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:13,674 WARN L141 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size
[2021-02-24 04:49:13,679 WARN L147 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size 16
[2021-02-24 04:49:13,686 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size
[2021-02-24 04:49:13,690 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11
[2021-02-24 04:49:13,701 WARN L141 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size
[2021-02-24 04:49:13,703 WARN L147 QuantifierPusher]: treesize reduction 31, result has 8.8 percent of original size 3
[2021-02-24 04:49:13,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,706 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-02-24 04:49:13,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-02-24 04:49:13,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 04:49:13,719 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 04:49:13,724 WARN L141 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size
[2021-02-24 04:49:13,739 WARN L147 QuantifierPusher]: treesize reduction 9, result has 76.3 percent of original size 29
[2021-02-24 04:49:13,740 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION
[2021-02-24 04:49:13,760 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2021-02-24 04:49:13,761 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2021-02-24 04:49:13,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-02-24 04:49:13,782 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2021-02-24 04:49:13,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:49:13 BoogieIcfgContainer
[2021-02-24 04:49:13,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-24 04:49:13,784 INFO L168 Benchmark]: Toolchain (without parser) took 3259.41 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 95.5 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB.
[2021-02-24 04:49:13,784 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-24 04:49:13,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.27 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2021-02-24 04:49:13,786 INFO L168 Benchmark]: Boogie Preprocessor took 40.86 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-02-24 04:49:13,786 INFO L168 Benchmark]: RCFGBuilder took 597.21 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 98.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
[2021-02-24 04:49:13,787 INFO L168 Benchmark]: TraceAbstraction took 2308.99 ms. Allocated memory is still 151.0 MB. Free memory was 97.8 MB in the beginning and 95.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB.
[2021-02-24 04:49:13,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 288.27 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 116.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 40.86 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 597.21 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 98.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 2308.99 ms. Allocated memory is still 151.0 MB. Free memory was 97.8 MB in the beginning and 95.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L25] unsigned int i,j,a,b;
[L26] int flag = __VERIFIER_nondet_int();
[L27] a = 0
[L28] b = 0
[L29] j = 1
[L30] COND TRUE \read(flag)
[L31] i = 0
[L35] COND TRUE __VERIFIER_nondet_int()
[L36] a++
[L37] b += (j - i)
[L38] i += 2
[L39] COND TRUE i%2 == 0
[L40] j += 2
[L35] COND FALSE !(__VERIFIER_nondet_int())
[L45] COND TRUE \read(flag)
[L46] CALL __VERIFIER_assert(a == b)
[L18] COND TRUE !(cond)
[L19] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 141 SDtfs, 158 SDslu, 57 SDs, 0 SdLazy, 147 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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: 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...