/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-36cd7be
[2021-02-24 00:17:47,401 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-02-24 00:17:47,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-02-24 00:17:47,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-02-24 00:17:47,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-02-24 00:17:47,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-02-24 00:17:47,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-02-24 00:17:47,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2021-02-24 00:17:47,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
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[2021-02-24 00:17:47,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-02-24 00:17:47,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-02-24 00:17:47,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-02-24 00:17:47,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-02-24 00:17:47,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-02-24 00:17:47,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-02-24 00:17:47,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-02-24 00:17:47,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-02-24 00:17:47,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-02-24 00:17:47,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-02-24 00:17:47,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2021-02-24 00:17:47,587 INFO L113 SettingsManager]: Loading preferences was successful
[2021-02-24 00:17:47,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-02-24 00:17:47,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-02-24 00:17:47,592 INFO L138 SettingsManager]: * sizeof long=4
[2021-02-24 00:17:47,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-02-24 00:17:47,592 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-02-24 00:17:47,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-02-24 00:17:47,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-02-24 00:17:47,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-02-24 00:17:47,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-02-24 00:17:47,594 INFO L138 SettingsManager]: * sizeof long double=12
[2021-02-24 00:17:47,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-02-24 00:17:47,595 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-02-24 00:17:47,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-02-24 00:17:47,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-02-24 00:17:47,596 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2021-02-24 00:17:47,596 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-02-24 00:17:47,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-02-24 00:17:47,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-02-24 00:17:47,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-02-24 00:17:47,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2021-02-24 00:17:47,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-02-24 00:17:47,597 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true
[2021-02-24 00:17:48,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-02-24 00:17:48,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-02-24 00:17:48,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-02-24 00:17:48,038 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-02-24 00:17:48,041 INFO L275 PluginConnector]: CDTParser initialized
[2021-02-24 00:17:48,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c
[2021-02-24 00:17:48,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d635dc0/81a9147a59ac4b5aa474b73f63b78d18/FLAG656848edf
[2021-02-24 00:17:48,735 INFO L306 CDTParser]: Found 1 translation units.
[2021-02-24 00:17:48,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c
[2021-02-24 00:17:48,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d635dc0/81a9147a59ac4b5aa474b73f63b78d18/FLAG656848edf
[2021-02-24 00:17:49,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7d635dc0/81a9147a59ac4b5aa474b73f63b78d18
[2021-02-24 00:17:49,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-02-24 00:17:49,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-02-24 00:17:49,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-02-24 00:17:49,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-02-24 00:17:49,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-02-24 00:17:49,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b87d29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49, skipping insertion in model container
[2021-02-24 00:17:49,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-02-24 00:17:49,180 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-02-24 00:17:49,399 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-crafted/simple_vardep_2.c[584,597]
[2021-02-24 00:17:49,420 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 00:17:49,435 INFO L203 MainTranslator]: Completed pre-run
[2021-02-24 00:17:49,449 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-crafted/simple_vardep_2.c[584,597]
[2021-02-24 00:17:49,455 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-02-24 00:17:49,472 INFO L208 MainTranslator]: Completed translation
[2021-02-24 00:17:49,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49 WrapperNode
[2021-02-24 00:17:49,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-02-24 00:17:49,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-02-24 00:17:49,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-02-24 00:17:49,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-02-24 00:17:49,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (1/1) ...
[2021-02-24 00:17:49,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-02-24 00:17:49,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-02-24 00:17:49,513 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-02-24 00:17:49,513 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-02-24 00:17:49,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (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 00:17:49,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-02-24 00:17:49,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-02-24 00:17:49,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-02-24 00:17:49,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-02-24 00:17:49,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-02-24 00:17:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-02-24 00:17:49,613 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-02-24 00:17:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-02-24 00:17:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-02-24 00:17:49,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-02-24 00:17:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-02-24 00:17:49,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-02-24 00:17:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-02-24 00:17:49,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-02-24 00:17:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-02-24 00:17:49,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-02-24 00:17:49,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-02-24 00:17:49,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-02-24 00:17:49,871 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-02-24 00:17:49,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:17:49 BoogieIcfgContainer
[2021-02-24 00:17:49,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-02-24 00:17:49,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-02-24 00:17:49,897 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-02-24 00:17:49,908 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-02-24 00:17:49,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:17:49" (1/3) ...
[2021-02-24 00:17:49,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bc308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:17:49, skipping insertion in model container
[2021-02-24 00:17:49,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:17:49" (2/3) ...
[2021-02-24 00:17:49,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41bc308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:17:49, skipping insertion in model container
[2021-02-24 00:17:49,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:17:49" (3/3) ...
[2021-02-24 00:17:49,913 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c
[2021-02-24 00:17:49,923 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2021-02-24 00:17:49,929 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-02-24 00:17:49,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-02-24 00:17:50,004 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-02-24 00:17:50,004 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-02-24 00:17:50,005 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2021-02-24 00:17:50,005 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-02-24 00:17:50,005 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-02-24 00:17:50,005 INFO L381 AbstractCegarLoop]: Difference is false
[2021-02-24 00:17:50,005 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-02-24 00:17:50,005 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-02-24 00:17:50,043 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states.
[2021-02-24 00:17:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2021-02-24 00:17:50,064 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 00:17:50,068 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]
[2021-02-24 00:17:50,069 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 00:17:50,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 00:17:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1490799159, now seen corresponding path program 1 times
[2021-02-24 00:17:50,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 00:17:50,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167150941]
[2021-02-24 00:17:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 00:17:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:50,595 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:50,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:50,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:50,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-24 00:17:50,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:50,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-24 00:17:50,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:50,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10
[2021-02-24 00:17:50,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:50,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-02-24 00:17:50,741 WARN L141 QuantifierPusher]: treesize reduction 23, result has 83.6 percent of original size
[2021-02-24 00:17:50,758 WARN L147 QuantifierPusher]: treesize reduction 23, result has 83.6 percent of original size 117
[2021-02-24 00:17:50,899 WARN L141 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size
[2021-02-24 00:17:50,920 WARN L147 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size 215
[2021-02-24 00:17:51,117 WARN L202 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35
[2021-02-24 00:17:51,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:51,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-24 00:17:51,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:51,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-24 00:17:51,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:51,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:51,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 00:17:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:51,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:51,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:51,263 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 00:17:51,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167150941]
[2021-02-24 00:17:51,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-02-24 00:17:51,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11
[2021-02-24 00:17:51,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808064738]
[2021-02-24 00:17:51,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-02-24 00:17:51,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 00:17:51,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-02-24 00:17:51,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110
[2021-02-24 00:17:51,293 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states.
[2021-02-24 00:17:51,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 00:17:51,936 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions.
[2021-02-24 00:17:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-02-24 00:17:51,938 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23
[2021-02-24 00:17:51,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 00:17:51,947 INFO L225 Difference]: With dead ends: 59
[2021-02-24 00:17:51,947 INFO L226 Difference]: Without dead ends: 37
[2021-02-24 00:17:51,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380
[2021-02-24 00:17:51,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2021-02-24 00:17:51,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35.
[2021-02-24 00:17:52,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2021-02-24 00:17:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions.
[2021-02-24 00:17:52,004 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23
[2021-02-24 00:17:52,005 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 00:17:52,005 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions.
[2021-02-24 00:17:52,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2021-02-24 00:17:52,006 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions.
[2021-02-24 00:17:52,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2021-02-24 00:17:52,007 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 00:17:52,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-24 00:17:52,008 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-02-24 00:17:52,008 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 00:17:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 00:17:52,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1740881698, now seen corresponding path program 1 times
[2021-02-24 00:17:52,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 00:17:52,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57485349]
[2021-02-24 00:17:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 00:17:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:52,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:52,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-24 00:17:52,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-24 00:17:52,208 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,209 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10
[2021-02-24 00:17:52,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-02-24 00:17:52,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20
[2021-02-24 00:17:52,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21
[2021-02-24 00:17:52,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29
[2021-02-24 00:17:52,291 WARN L141 QuantifierPusher]: treesize reduction 23, result has 84.1 percent of original size
[2021-02-24 00:17:52,294 WARN L147 QuantifierPusher]: treesize reduction 23, result has 84.1 percent of original size 122
[2021-02-24 00:17:52,374 WARN L141 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size
[2021-02-24 00:17:52,380 WARN L147 QuantifierPusher]: treesize reduction 46, result has 82.4 percent of original size 215
[2021-02-24 00:17:52,550 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35
[2021-02-24 00:17:52,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-24 00:17:52,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-24 00:17:52,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:52,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 00:17:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:52,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:52,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-02-24 00:17:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:52,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:52,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-02-24 00:17:52,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57485349]
[2021-02-24 00:17:52,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-02-24 00:17:52,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2021-02-24 00:17:52,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630169061]
[2021-02-24 00:17:52,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states
[2021-02-24 00:17:52,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 00:17:52,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-02-24 00:17:52,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2021-02-24 00:17:52,661 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 14 states.
[2021-02-24 00:17:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 00:17:53,432 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions.
[2021-02-24 00:17:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-02-24 00:17:53,433 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32
[2021-02-24 00:17:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 00:17:53,435 INFO L225 Difference]: With dead ends: 48
[2021-02-24 00:17:53,435 INFO L226 Difference]: Without dead ends: 46
[2021-02-24 00:17:53,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650
[2021-02-24 00:17:53,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-02-24 00:17:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44.
[2021-02-24 00:17:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2021-02-24 00:17:53,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions.
[2021-02-24 00:17:53,455 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 32
[2021-02-24 00:17:53,456 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 00:17:53,456 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions.
[2021-02-24 00:17:53,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2021-02-24 00:17:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions.
[2021-02-24 00:17:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2021-02-24 00:17:53,458 INFO L414 BasicCegarLoop]: Found error trace
[2021-02-24 00:17:53,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-02-24 00:17:53,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-02-24 00:17:53,458 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-02-24 00:17:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-02-24 00:17:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1811489431, now seen corresponding path program 2 times
[2021-02-24 00:17:53,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2021-02-24 00:17:53,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771440485]
[2021-02-24 00:17:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-02-24 00:17:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:53,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:53,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-02-24 00:17:53,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-02-24 00:17:53,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,615 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10
[2021-02-24 00:17:53,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-02-24 00:17:53,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20
[2021-02-24 00:17:53,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21
[2021-02-24 00:17:53,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29
[2021-02-24 00:17:53,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25
[2021-02-24 00:17:53,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21
[2021-02-24 00:17:53,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29
[2021-02-24 00:17:53,733 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size
[2021-02-24 00:17:53,738 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size 141
[2021-02-24 00:17:53,823 WARN L141 QuantifierPusher]: treesize reduction 27, result has 89.7 percent of original size
[2021-02-24 00:17:53,828 WARN L147 QuantifierPusher]: treesize reduction 27, result has 89.7 percent of original size 234
[2021-02-24 00:17:53,987 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35
[2021-02-24 00:17:53,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:53,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-24 00:17:54,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:54,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-02-24 00:17:54,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:54,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-02-24 00:17:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:54,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:54,065 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2021-02-24 00:17:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:54,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:54,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:54,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28
[2021-02-24 00:17:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-02-24 00:17:54,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-02-24 00:17:54,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-02-24 00:17:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-02-24 00:17:54,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771440485]
[2021-02-24 00:17:54,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2021-02-24 00:17:54,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2021-02-24 00:17:54,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004584186]
[2021-02-24 00:17:54,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states
[2021-02-24 00:17:54,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2021-02-24 00:17:54,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-02-24 00:17:54,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210
[2021-02-24 00:17:54,093 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 15 states.
[2021-02-24 00:17:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-02-24 00:17:54,645 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions.
[2021-02-24 00:17:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2021-02-24 00:17:54,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41
[2021-02-24 00:17:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-02-24 00:17:54,647 INFO L225 Difference]: With dead ends: 44
[2021-02-24 00:17:54,647 INFO L226 Difference]: Without dead ends: 0
[2021-02-24 00:17:54,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600
[2021-02-24 00:17:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-02-24 00:17:54,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-02-24 00:17:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2021-02-24 00:17:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-02-24 00:17:54,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41
[2021-02-24 00:17:54,649 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-02-24 00:17:54,650 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-02-24 00:17:54,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2021-02-24 00:17:54,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-02-24 00:17:54,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-02-24 00:17:54,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-02-24 00:17:54,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2021-02-24 00:17:55,151 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 6) no Hoare annotation was computed.
[2021-02-24 00:17:55,152 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 6) no Hoare annotation was computed.
[2021-02-24 00:17:55,152 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 6) no Hoare annotation was computed.
[2021-02-24 00:17:55,152 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-24 00:17:55,152 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true
[2021-02-24 00:17:55,153 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 6) the Hoare annotation is: true
[2021-02-24 00:17:55,153 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|))
[2021-02-24 00:17:55,153 INFO L192 CegarLoopUtils]: At program point L6(line 6) the Hoare annotation is: true
[2021-02-24 00:17:55,153 INFO L192 CegarLoopUtils]: At program point L6-1(line 6) the Hoare annotation is: true
[2021-02-24 00:17:55,153 INFO L192 CegarLoopUtils]: At program point L6-2(line 6) the Hoare annotation is: true
[2021-02-24 00:17:55,153 INFO L192 CegarLoopUtils]: At program point L6-3(line 6) the Hoare annotation is: true
[2021-02-24 00:17:55,154 INFO L192 CegarLoopUtils]: At program point L6-4(line 6) the Hoare annotation is: true
[2021-02-24 00:17:55,154 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true
[2021-02-24 00:17:55,154 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true
[2021-02-24 00:17:55,154 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true
[2021-02-24 00:17:55,154 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2021-02-24 00:17:55,154 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true
[2021-02-24 00:17:55,155 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 15 28) the Hoare annotation is: true
[2021-02-24 00:17:55,155 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1)))
[2021-02-24 00:17:55,155 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 15 28) the Hoare annotation is: true
[2021-02-24 00:17:55,155 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~k~0 3)) (.cse2 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse2 main_~j~0) (<= .cse1 .cse0) (<= main_~j~0 .cse2)))
[2021-02-24 00:17:55,155 INFO L185 CegarLoopUtils]: At program point L25-1(lines 21 26) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1)))
[2021-02-24 00:17:55,156 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (+ main_~k~0 3)) (.cse3 (* 2 main_~i~0)) (.cse2 (+ main_~j~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse2 .cse3) (<= .cse3 .cse2)))
[2021-02-24 00:17:55,156 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= .cse1 main_~k~0) (<= main_~k~0 .cse1)))
[2021-02-24 00:17:55,156 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= main_~i~0 0) (= main_~j~0 0))
[2021-02-24 00:17:55,156 INFO L192 CegarLoopUtils]: At program point L21-2(lines 15 28) the Hoare annotation is: true
[2021-02-24 00:17:55,156 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (= main_~i~0 0)
[2021-02-24 00:17:55,156 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 7 13) the Hoare annotation is: true
[2021-02-24 00:17:55,157 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2021-02-24 00:17:55,157 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2021-02-24 00:17:55,157 INFO L185 CegarLoopUtils]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2021-02-24 00:17:55,157 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2021-02-24 00:17:55,157 INFO L185 CegarLoopUtils]: At program point L9-2(lines 7 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))
[2021-02-24 00:17:55,158 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0)
[2021-02-24 00:17:55,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:17:55 BoogieIcfgContainer
[2021-02-24 00:17:55,176 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-02-24 00:17:55,178 INFO L168 Benchmark]: Toolchain (without parser) took 6051.26 ms. Allocated memory was 159.4 MB in the beginning and 205.5 MB in the end (delta: 46.1 MB). Free memory was 135.9 MB in the beginning and 164.2 MB in the end (delta: -28.3 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB.
[2021-02-24 00:17:55,178 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-02-24 00:17:55,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.71 ms. Allocated memory is still 159.4 MB. Free memory was 134.8 MB in the beginning and 125.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
[2021-02-24 00:17:55,180 INFO L168 Benchmark]: Boogie Preprocessor took 34.96 ms. Allocated memory is still 159.4 MB. Free memory was 125.6 MB in the beginning and 124.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-02-24 00:17:55,181 INFO L168 Benchmark]: RCFGBuilder took 360.92 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 111.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
[2021-02-24 00:17:55,182 INFO L168 Benchmark]: TraceAbstraction took 5280.13 ms. Allocated memory was 159.4 MB in the beginning and 205.5 MB in the end (delta: 46.1 MB). Free memory was 142.8 MB in the beginning and 164.2 MB in the end (delta: -21.3 MB). Peak memory consumption was 117.6 MB. Max. memory is 8.0 GB.
[2021-02-24 00:17:55,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 328.71 ms. Allocated memory is still 159.4 MB. Free memory was 134.8 MB in the beginning and 125.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 34.96 ms. Allocated memory is still 159.4 MB. Free memory was 125.6 MB in the beginning and 124.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 360.92 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 111.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 5280.13 ms. Allocated memory was 159.4 MB in the beginning and 205.5 MB in the end (delta: 46.1 MB). Free memory was 142.8 MB in the beginning and 164.2 MB in the end (delta: -21.3 MB). Peak memory consumption was 117.6 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 10]: 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: 21]: Loop Invariant
Derived loop invariant: ((2 * i <= j && j <= 2 * i) && 3 * i <= k) && k <= 3 * i
- ProcedureContractResult [Line: 15]: Procedure Contract for main
Derived contract for procedure main: 1
- ProcedureContractResult [Line: 7]: Procedure Contract for __VERIFIER_assert
Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 88 SDslu, 372 SDs, 0 SdLazy, 382 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=2, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 52 PreInvPairs, 77 NumberOfFragments, 208 HoareAnnotationTreeSize, 52 FomulaSimplifications, 1856 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 31 FomulaSimplificationsInter, 671 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 36588 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 14/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...