/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 03:17:11,846 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 03:17:11,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 03:17:11,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 03:17:11,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 03:17:11,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 03:17:11,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 03:17:11,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
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[2021-05-01 03:17:11,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-05-01 03:17:11,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-05-01 03:17:11,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-05-01 03:17:11,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 03:17:11,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 03:17:11,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 03:17:11,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 03:17:11,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 03:17:11,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 03:17:11,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 03:17:11,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 03:17:11,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 03:17:11,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 03:17:11,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-05-01 03:17:11,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2021-05-01 03:17:11,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-05-01 03:17:11,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
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[2021-05-01 03:17:11,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2021-05-01 03:17:11,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 03:17:11,947 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2021-05-01 03:17:11,963 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 03:17:11,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 03:17:11,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 03:17:11,975 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 03:17:11,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 03:17:11,975 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 03:17:11,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 03:17:11,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 03:17:11,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 03:17:11,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 03:17:11,977 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 03:17:11,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 03:17:11,977 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 03:17:11,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 03:17:11,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 03:17:11,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 03:17:11,978 INFO L138 SettingsManager]: * To the following directory=./dump/
[2021-05-01 03:17:11,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 03:17:11,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 03:17:11,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 03:17:11,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-05-01 03:17:11,980 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2021-05-01 03:17:11,980 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 03:17:12,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 03:17:12,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 03:17:12,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 03:17:12,274 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 03:17:12,275 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 03:17:12,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i
[2021-05-01 03:17:12,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff94d1ed/d09dabb625644e9f9116a2e07c149071/FLAG217d33f37
[2021-05-01 03:17:12,772 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 03:17:12,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i
[2021-05-01 03:17:12,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff94d1ed/d09dabb625644e9f9116a2e07c149071/FLAG217d33f37
[2021-05-01 03:17:13,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff94d1ed/d09dabb625644e9f9116a2e07c149071
[2021-05-01 03:17:13,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 03:17:13,148 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2021-05-01 03:17:13,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 03:17:13,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 03:17:13,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 03:17:13,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6027fd86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13, skipping insertion in model container
[2021-05-01 03:17:13,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 03:17:13,177 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 03:17:13,280 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906]
[2021-05-01 03:17:13,303 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 03:17:13,310 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 03:17:13,337 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906]
[2021-05-01 03:17:13,387 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 03:17:13,399 INFO L208 MainTranslator]: Completed translation
[2021-05-01 03:17:13,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13 WrapperNode
[2021-05-01 03:17:13,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 03:17:13,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 03:17:13,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 03:17:13,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 03:17:13,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 03:17:13,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 03:17:13,435 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 03:17:13,435 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 03:17:13,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (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
[2021-05-01 03:17:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 03:17:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 03:17:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 03:17:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 03:17:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 03:17:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure __assert
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 03:17:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-05-01 03:17:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 03:17:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 03:17:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 03:17:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 03:17:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 03:17:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 03:17:13,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 03:17:13,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 03:17:13,805 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-05-01 03:17:13,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:17:13 BoogieIcfgContainer
[2021-05-01 03:17:13,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 03:17:13,807 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2021-05-01 03:17:13,807 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2021-05-01 03:17:13,808 INFO L275 PluginConnector]: IcfgTransformer initialized
[2021-05-01 03:17:13,813 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:17:13" (1/1) ...
[2021-05-01 03:17:13,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:17:13 BasicIcfg
[2021-05-01 03:17:13,838 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2021-05-01 03:17:13,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 03:17:13,839 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 03:17:13,842 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 03:17:13,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 03:17:13" (1/4) ...
[2021-05-01 03:17:13,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c60eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:17:13, skipping insertion in model container
[2021-05-01 03:17:13,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 03:17:13" (2/4) ...
[2021-05-01 03:17:13,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c60eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 03:17:13, skipping insertion in model container
[2021-05-01 03:17:13,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 03:17:13" (3/4) ...
[2021-05-01 03:17:13,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4c60eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:17:13, skipping insertion in model container
[2021-05-01 03:17:13,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 03:17:13" (4/4) ...
[2021-05-01 03:17:13,844 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.iJordan
[2021-05-01 03:17:13,848 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2021-05-01 03:17:13,854 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 03:17:13,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 03:17:13,896 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 03:17:13,897 INFO L377 AbstractCegarLoop]: Hoare is false
[2021-05-01 03:17:13,897 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates
[2021-05-01 03:17:13,897 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 03:17:13,897 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 03:17:13,897 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 03:17:13,897 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 03:17:13,897 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 03:17:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 33 states have internal predecessors, (48), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2021-05-01 03:17:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-05-01 03:17:13,926 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:17:13,927 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:17:13,927 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:17:13,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:17:13,933 INFO L82 PathProgramCache]: Analyzing trace with hash -505878006, now seen corresponding path program 1 times
[2021-05-01 03:17:13,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:17:13,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128318162]
[2021-05-01 03:17:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:17:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:14,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:14,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-05-01 03:17:14,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:14,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:14,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:14,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:17:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:14,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 03:17:14,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:17:14,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128318162]
[2021-05-01 03:17:14,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128318162] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 03:17:14,246 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 03:17:14,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-05-01 03:17:14,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001020204]
[2021-05-01 03:17:14,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-05-01 03:17:14,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:17:14,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-05-01 03:17:14,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-05-01 03:17:14,271 INFO L87 Difference]: Start difference. First operand has 54 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 33 states have internal predecessors, (48), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 03:17:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:17:14,795 INFO L93 Difference]: Finished difference Result 72 states and 112 transitions.
[2021-05-01 03:17:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-05-01 03:17:14,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2021-05-01 03:17:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:17:14,804 INFO L225 Difference]: With dead ends: 72
[2021-05-01 03:17:14,805 INFO L226 Difference]: Without dead ends: 64
[2021-05-01 03:17:14,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.3ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-05-01 03:17:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2021-05-01 03:17:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57.
[2021-05-01 03:17:14,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 35 states have internal predecessors, (37), 22 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2021-05-01 03:17:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions.
[2021-05-01 03:17:14,859 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 17
[2021-05-01 03:17:14,859 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:17:14,859 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions.
[2021-05-01 03:17:14,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 03:17:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions.
[2021-05-01 03:17:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-05-01 03:17:14,861 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:17:14,862 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:17:14,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 03:17:14,862 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:17:14,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:17:14,863 INFO L82 PathProgramCache]: Analyzing trace with hash 722598363, now seen corresponding path program 1 times
[2021-05-01 03:17:14,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:17:14,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788796352]
[2021-05-01 03:17:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:17:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:14,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:14,936 INFO L142 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size
[2021-05-01 03:17:14,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-05-01 03:17:14,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:17:14,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:14,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:14,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:14,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:17:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:14,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:14,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-05-01 03:17:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 03:17:15,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:17:15,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788796352]
[2021-05-01 03:17:15,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788796352] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 03:17:15,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 03:17:15,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-05-01 03:17:15,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245542861]
[2021-05-01 03:17:15,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-05-01 03:17:15,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:17:15,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-05-01 03:17:15,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-05-01 03:17:15,024 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 03:17:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:17:15,385 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions.
[2021-05-01 03:17:15,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-05-01 03:17:15,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22
[2021-05-01 03:17:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:17:15,389 INFO L225 Difference]: With dead ends: 61
[2021-05-01 03:17:15,390 INFO L226 Difference]: Without dead ends: 61
[2021-05-01 03:17:15,391 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 135.1ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2021-05-01 03:17:15,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2021-05-01 03:17:15,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2021-05-01 03:17:15,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 38 states have internal predecessors, (40), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2021-05-01 03:17:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions.
[2021-05-01 03:17:15,404 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 22
[2021-05-01 03:17:15,404 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:17:15,404 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions.
[2021-05-01 03:17:15,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 03:17:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions.
[2021-05-01 03:17:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2021-05-01 03:17:15,406 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:17:15,406 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:17:15,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-05-01 03:17:15,406 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:17:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:17:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash 349034817, now seen corresponding path program 1 times
[2021-05-01 03:17:15,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:17:15,407 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444733397]
[2021-05-01 03:17:15,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:17:15,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8
[2021-05-01 03:17:15,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:17:15,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-05-01 03:17:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2021-05-01 03:17:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2021-05-01 03:17:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2021-05-01 03:17:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36
[2021-05-01 03:17:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41
[2021-05-01 03:17:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2021-05-01 03:17:15,535 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:17:15,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444733397]
[2021-05-01 03:17:15,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444733397] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 03:17:15,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 03:17:15,537 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-05-01 03:17:15,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726261749]
[2021-05-01 03:17:15,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-05-01 03:17:15,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:17:15,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-05-01 03:17:15,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-05-01 03:17:15,539 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-05-01 03:17:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:17:15,717 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions.
[2021-05-01 03:17:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-05-01 03:17:15,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51
[2021-05-01 03:17:15,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:17:15,721 INFO L225 Difference]: With dead ends: 64
[2021-05-01 03:17:15,721 INFO L226 Difference]: Without dead ends: 61
[2021-05-01 03:17:15,722 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-05-01 03:17:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2021-05-01 03:17:15,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2021-05-01 03:17:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 38 states have internal predecessors, (38), 22 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2021-05-01 03:17:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions.
[2021-05-01 03:17:15,733 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 51
[2021-05-01 03:17:15,734 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:17:15,734 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions.
[2021-05-01 03:17:15,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)
[2021-05-01 03:17:15,734 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions.
[2021-05-01 03:17:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2021-05-01 03:17:15,737 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:17:15,737 INFO L519 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:17:15,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-05-01 03:17:15,737 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:17:15,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:17:15,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1328286090, now seen corresponding path program 1 times
[2021-05-01 03:17:15,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:17:15,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137526968]
[2021-05-01 03:17:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:17:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,807 INFO L142 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size
[2021-05-01 03:17:15,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:17:15,820 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size
[2021-05-01 03:17:15,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10
[2021-05-01 03:17:15,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:15,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:15,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:17:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-05-01 03:17:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2021-05-01 03:17:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2021-05-01 03:17:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2021-05-01 03:17:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-05-01 03:17:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2021-05-01 03:17:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:15,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:15,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2021-05-01 03:17:15,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:17:15,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137526968]
[2021-05-01 03:17:15,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137526968] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 03:17:15,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 03:17:15,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-05-01 03:17:15,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012018647]
[2021-05-01 03:17:15,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-05-01 03:17:15,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:17:15,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-05-01 03:17:15,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-05-01 03:17:15,889 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2021-05-01 03:17:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:17:16,219 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions.
[2021-05-01 03:17:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-05-01 03:17:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 52
[2021-05-01 03:17:16,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:17:16,220 INFO L225 Difference]: With dead ends: 66
[2021-05-01 03:17:16,220 INFO L226 Difference]: Without dead ends: 66
[2021-05-01 03:17:16,221 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-05-01 03:17:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2021-05-01 03:17:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65.
[2021-05-01 03:17:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 41 states have internal predecessors, (41), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2021-05-01 03:17:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions.
[2021-05-01 03:17:16,224 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 52
[2021-05-01 03:17:16,225 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:17:16,225 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions.
[2021-05-01 03:17:16,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7)
[2021-05-01 03:17:16,225 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions.
[2021-05-01 03:17:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2021-05-01 03:17:16,227 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:17:16,227 INFO L519 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:17:16,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-05-01 03:17:16,227 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:17:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:17:16,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1785526948, now seen corresponding path program 1 times
[2021-05-01 03:17:16,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:17:16,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865036245]
[2021-05-01 03:17:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:17:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-05-01 03:17:16,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5
[2021-05-01 03:17:16,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:16,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:16,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:17:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-05-01 03:17:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2021-05-01 03:17:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2021-05-01 03:17:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2021-05-01 03:17:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-05-01 03:17:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2021-05-01 03:17:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2021-05-01 03:17:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2021-05-01 03:17:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2021-05-01 03:17:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2021-05-01 03:17:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2021-05-01 03:17:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2021-05-01 03:17:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2021-05-01 03:17:16,335 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:17:16,338 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865036245]
[2021-05-01 03:17:16,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865036245] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 03:17:16,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 03:17:16,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-05-01 03:17:16,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187726258]
[2021-05-01 03:17:16,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-05-01 03:17:16,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:17:16,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-05-01 03:17:16,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42
[2021-05-01 03:17:16,339 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)
[2021-05-01 03:17:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:17:16,594 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions.
[2021-05-01 03:17:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-05-01 03:17:16,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87
[2021-05-01 03:17:16,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:17:16,599 INFO L225 Difference]: With dead ends: 72
[2021-05-01 03:17:16,599 INFO L226 Difference]: Without dead ends: 72
[2021-05-01 03:17:16,599 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2021-05-01 03:17:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2021-05-01 03:17:16,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69.
[2021-05-01 03:17:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 40 states have (on average 1.1) internal successors, (44), 44 states have internal predecessors, (44), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21)
[2021-05-01 03:17:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions.
[2021-05-01 03:17:16,616 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 87
[2021-05-01 03:17:16,616 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:17:16,617 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions.
[2021-05-01 03:17:16,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)
[2021-05-01 03:17:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions.
[2021-05-01 03:17:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2021-05-01 03:17:16,618 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 03:17:16,618 INFO L519 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 03:17:16,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-05-01 03:17:16,619 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 03:17:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 03:17:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash 874819922, now seen corresponding path program 1 times
[2021-05-01 03:17:16,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 03:17:16,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407489886]
[2021-05-01 03:17:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 03:17:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:17:16,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 03:17:16,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:16,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4
[2021-05-01 03:17:16,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 03:17:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13
[2021-05-01 03:17:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18
[2021-05-01 03:17:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2021-05-01 03:17:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30
[2021-05-01 03:17:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37
[2021-05-01 03:17:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2021-05-01 03:17:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2021-05-01 03:17:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53
[2021-05-01 03:17:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60
[2021-05-01 03:17:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65
[2021-05-01 03:17:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71
[2021-05-01 03:17:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76
[2021-05-01 03:17:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83
[2021-05-01 03:17:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 03:17:16,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 03:17:16,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 03:17:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2021-05-01 03:17:16,720 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 03:17:16,720 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407489886]
[2021-05-01 03:17:16,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407489886] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 03:17:16,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 03:17:16,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-05-01 03:17:16,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152908429]
[2021-05-01 03:17:16,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-05-01 03:17:16,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 03:17:16,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-05-01 03:17:16,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-05-01 03:17:16,724 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)
[2021-05-01 03:17:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 03:17:17,031 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions.
[2021-05-01 03:17:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-05-01 03:17:17,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 92
[2021-05-01 03:17:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 03:17:17,032 INFO L225 Difference]: With dead ends: 73
[2021-05-01 03:17:17,032 INFO L226 Difference]: Without dead ends: 0
[2021-05-01 03:17:17,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 115.5ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2021-05-01 03:17:17,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-05-01 03:17:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-05-01 03:17:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-05-01 03:17:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-05-01 03:17:17,033 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92
[2021-05-01 03:17:17,033 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 03:17:17,033 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-05-01 03:17:17,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)
[2021-05-01 03:17:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-05-01 03:17:17,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-05-01 03:17:17,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-05-01 03:17:17,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 03:17:17 BasicIcfg
[2021-05-01 03:17:17,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 03:17:17,038 INFO L168 Benchmark]: Toolchain (without parser) took 3890.19 ms. Allocated memory was 228.6 MB in the beginning and 276.8 MB in the end (delta: 48.2 MB). Free memory was 194.3 MB in the beginning and 225.9 MB in the end (delta: -31.6 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB.
[2021-05-01 03:17:17,038 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 228.6 MB. Free memory is still 210.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 03:17:17,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.97 ms. Allocated memory is still 228.6 MB. Free memory was 194.1 MB in the beginning and 211.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB.
[2021-05-01 03:17:17,039 INFO L168 Benchmark]: Boogie Preprocessor took 32.94 ms. Allocated memory is still 228.6 MB. Free memory was 211.3 MB in the beginning and 209.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 03:17:17,039 INFO L168 Benchmark]: RCFGBuilder took 372.20 ms. Allocated memory is still 228.6 MB. Free memory was 209.9 MB in the beginning and 189.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB.
[2021-05-01 03:17:17,040 INFO L168 Benchmark]: IcfgTransformer took 30.49 ms. Allocated memory is still 228.6 MB. Free memory was 189.7 MB in the beginning and 187.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2021-05-01 03:17:17,040 INFO L168 Benchmark]: TraceAbstraction took 3198.37 ms. Allocated memory was 228.6 MB in the beginning and 276.8 MB in the end (delta: 48.2 MB). Free memory was 187.6 MB in the beginning and 225.9 MB in the end (delta: -38.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB.
[2021-05-01 03:17:17,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.39 ms. Allocated memory is still 228.6 MB. Free memory is still 210.9 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 250.97 ms. Allocated memory is still 228.6 MB. Free memory was 194.1 MB in the beginning and 211.3 MB in the end (delta: -17.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 32.94 ms. Allocated memory is still 228.6 MB. Free memory was 211.3 MB in the beginning and 209.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 372.20 ms. Allocated memory is still 228.6 MB. Free memory was 209.9 MB in the beginning and 189.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB.
* IcfgTransformer took 30.49 ms. Allocated memory is still 228.6 MB. Free memory was 189.7 MB in the beginning and 187.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 3198.37 ms. Allocated memory was 228.6 MB in the beginning and 276.8 MB in the end (delta: 48.2 MB). Free memory was 187.6 MB in the beginning and 225.9 MB in the end (delta: -38.2 MB). Peak memory consumption was 11.0 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 19]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3139.5ms, OverallIterations: 6, TraceHistogramMax: 14, EmptinessCheckTime: 20.7ms, AutomataDifference: 2006.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 294 SDtfs, 277 SDslu, 334 SDs, 0 SdLazy, 1031 SolverSat, 319 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1087.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 688.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 85.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.0ms SsaConstructionTime, 127.5ms SatisfiabilityAnalysisTime, 703.5ms InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 610 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 772/772 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
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
Received shutdown request...