/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound20.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-7390193
[2022-04-05 02:37:00,913 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-04-05 02:37:00,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-04-05 02:37:00,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-04-05 02:37:00,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-04-05 02:37:00,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-04-05 02:37:00,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-04-05 02:37:00,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-04-05 02:37:00,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-04-05 02:37:00,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-04-05 02:37:00,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-04-05 02:37:00,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-04-05 02:37:00,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-04-05 02:37:00,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-04-05 02:37:00,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-04-05 02:37:00,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-04-05 02:37:00,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-04-05 02:37:00,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-04-05 02:37:00,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-04-05 02:37:00,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-04-05 02:37:00,957 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values
[2022-04-05 02:37:00,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-04-05 02:37:00,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-04-05 02:37:00,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-04-05 02:37:00,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-04-05 02:37:00,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-04-05 02:37:00,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-04-05 02:37:00,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-04-05 02:37:00,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-04-05 02:37:00,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-04-05 02:37:00,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-04-05 02:37:00,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-04-05 02:37:00,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-04-05 02:37:00,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-04-05 02:37:00,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-04-05 02:37:00,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-04-05 02:37:00,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-04-05 02:37:00,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-04-05 02:37:00,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-04-05 02:37:00,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-04-05 02:37:00,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-04-05 02:37:00,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-04-05 02:37:00,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2022-04-05 02:37:00,981 INFO L113 SettingsManager]: Loading preferences was successful
[2022-04-05 02:37:00,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-04-05 02:37:00,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-04-05 02:37:00,982 INFO L138 SettingsManager]: * sizeof long=4
[2022-04-05 02:37:00,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-04-05 02:37:00,983 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-04-05 02:37:00,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-04-05 02:37:00,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-04-05 02:37:00,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-04-05 02:37:00,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-04-05 02:37:00,983 INFO L138 SettingsManager]: * sizeof long double=12
[2022-04-05 02:37:00,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-04-05 02:37:00,984 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-04-05 02:37:00,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-04-05 02:37:00,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-04-05 02:37:00,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-04-05 02:37:00,984 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-04-05 02:37:00,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-04-05 02:37:00,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-05 02:37:00,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-04-05 02:37:00,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-04-05 02:37:00,986 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-04-05 02:37:00,986 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-04-05 02:37:01,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-04-05 02:37:01,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-04-05 02:37:01,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-04-05 02:37:01,264 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-04-05 02:37:01,265 INFO L275 PluginConnector]: CDTParser initialized
[2022-04-05 02:37:01,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound20.c
[2022-04-05 02:37:01,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea9c2fab/df5eaf84cec64256a02de38b601d55d1/FLAG6818064a0
[2022-04-05 02:37:01,705 INFO L306 CDTParser]: Found 1 translation units.
[2022-04-05 02:37:01,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound20.c
[2022-04-05 02:37:01,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea9c2fab/df5eaf84cec64256a02de38b601d55d1/FLAG6818064a0
[2022-04-05 02:37:01,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ea9c2fab/df5eaf84cec64256a02de38b601d55d1
[2022-04-05 02:37:01,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-04-05 02:37:01,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-04-05 02:37:01,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-04-05 02:37:01,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-04-05 02:37:01,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-04-05 02:37:01,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:37:01" (1/1) ...
[2022-04-05 02:37:01,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fcdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:01, skipping insertion in model container
[2022-04-05 02:37:01,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 02:37:01" (1/1) ...
[2022-04-05 02:37:01,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-04-05 02:37:01,762 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-04-05 02:37:01,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound20.c[524,537]
[2022-04-05 02:37:01,995 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-05 02:37:02,002 INFO L203 MainTranslator]: Completed pre-run
[2022-04-05 02:37:02,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound20.c[524,537]
[2022-04-05 02:37:02,032 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-04-05 02:37:02,042 INFO L208 MainTranslator]: Completed translation
[2022-04-05 02:37:02,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02 WrapperNode
[2022-04-05 02:37:02,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-04-05 02:37:02,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-04-05 02:37:02,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-04-05 02:37:02,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-04-05 02:37:02,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-04-05 02:37:02,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-04-05 02:37:02,087 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-04-05 02:37:02,087 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-04-05 02:37:02,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-05 02:37:02,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-05 02:37:02,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-04-05 02:37:02,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-04-05 02:37:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-04-05 02:37:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-04-05 02:37:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-04-05 02:37:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-04-05 02:37:02,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-04-05 02:37:02,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-04-05 02:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-04-05 02:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-04-05 02:37:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-04-05 02:37:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-04-05 02:37:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-04-05 02:37:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-04-05 02:37:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-04-05 02:37:02,159 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-04-05 02:37:02,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-04-05 02:37:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-04-05 02:37:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-04-05 02:37:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-04-05 02:37:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-04-05 02:37:02,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-04-05 02:37:02,220 INFO L234 CfgBuilder]: Building ICFG
[2022-04-05 02:37:02,221 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-04-05 02:37:02,377 INFO L275 CfgBuilder]: Performing block encoding
[2022-04-05 02:37:02,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-04-05 02:37:02,382 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-04-05 02:37:02,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:37:02 BoogieIcfgContainer
[2022-04-05 02:37:02,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-04-05 02:37:02,384 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-04-05 02:37:02,384 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-04-05 02:37:02,385 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-04-05 02:37:02,388 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:37:02" (1/1) ...
[2022-04-05 02:37:02,389 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN
[2022-04-05 02:37:02,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:37:02 BasicIcfg
[2022-04-05 02:37:02,402 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-04-05 02:37:02,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-04-05 02:37:02,404 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-04-05 02:37:02,406 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-04-05 02:37:02,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 02:37:01" (1/4) ...
[2022-04-05 02:37:02,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407009cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:37:02, skipping insertion in model container
[2022-04-05 02:37:02,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 02:37:02" (2/4) ...
[2022-04-05 02:37:02,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407009cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 02:37:02, skipping insertion in model container
[2022-04-05 02:37:02,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 02:37:02" (3/4) ...
[2022-04-05 02:37:02,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407009cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:37:02, skipping insertion in model container
[2022-04-05 02:37:02,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 02:37:02" (4/4) ...
[2022-04-05 02:37:02,408 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound20.cJordan
[2022-04-05 02:37:02,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2022-04-05 02:37:02,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-04-05 02:37:02,444 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-05 02:37:02,450 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-05 02:37:02,450 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-04-05 02:37:02,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-04-05 02:37:02,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-04-05 02:37:02,469 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-05 02:37:02,469 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-05 02:37:02,470 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-05 02:37:02,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-05 02:37:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1450325676, now seen corresponding path program 1 times
[2022-04-05 02:37:02,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-05 02:37:02,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678927316]
[2022-04-05 02:37:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-05 02:37:02,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-05 02:37:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-05 02:37:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-04-05 02:37:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-05 02:37:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-04-05 02:37:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-05 02:37:02,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2022-04-05 02:37:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-05 02:37:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2022-04-05 02:37:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-05 02:37:02,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2022-04-05 02:37:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-05 02:37:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-04-05 02:37:02,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-05 02:37:02,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678927316]
[2022-04-05 02:37:02,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678927316] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-05 02:37:02,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-05 02:37:02,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-04-05 02:37:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214696831]
[2022-04-05 02:37:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-05 02:37:02,701 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-05 02:37:02,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-05 02:37:02,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-05 02:37:02,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-05 02:37:02,735 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-04-05 02:37:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-05 02:37:02,806 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions.
[2022-04-05 02:37:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-04-05 02:37:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33
[2022-04-05 02:37:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-05 02:37:02,818 INFO L225 Difference]: With dead ends: 32
[2022-04-05 02:37:02,818 INFO L226 Difference]: Without dead ends: 27
[2022-04-05 02:37:02,820 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-05 02:37:02,823 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-05 02:37:02,824 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-05 02:37:02,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2022-04-05 02:37:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2022-04-05 02:37:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-04-05 02:37:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions.
[2022-04-05 02:37:02,861 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33
[2022-04-05 02:37:02,861 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-05 02:37:02,861 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions.
[2022-04-05 02:37:02,862 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-04-05 02:37:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions.
[2022-04-05 02:37:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-04-05 02:37:02,864 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-05 02:37:02,865 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-05 02:37:02,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-04-05 02:37:02,865 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-05 02:37:02,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-05 02:37:02,866 INFO L85 PathProgramCache]: Analyzing trace with hash 512475503, now seen corresponding path program 1 times
[2022-04-05 02:37:02,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-05 02:37:02,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059260083]
[2022-04-05 02:37:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-05 02:37:02,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-05 02:37:02,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-05 02:37:02,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131359595]
[2022-04-05 02:37:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-05 02:37:02,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-05 02:37:02,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-05 02:37:02,906 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-05 02:37:02,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-04-05 02:37:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-05 02:37:02,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core
[2022-04-05 02:37:02,995 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-05 02:37:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-04-05 02:37:06,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-04-05 02:37:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-05 02:37:06,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059260083]
[2022-04-05 02:37:06,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-05 02:37:06,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131359595]
[2022-04-05 02:37:06,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131359595] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-05 02:37:06,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-05 02:37:06,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-04-05 02:37:06,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994651175]
[2022-04-05 02:37:06,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-05 02:37:06,855 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-04-05 02:37:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-05 02:37:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-04-05 02:37:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-04-05 02:37:06,856 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2022-04-05 02:37:08,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-04-05 02:37:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-05 02:37:08,394 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions.
[2022-04-05 02:37:08,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-04-05 02:37:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33
[2022-04-05 02:37:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-05 02:37:08,397 INFO L225 Difference]: With dead ends: 36
[2022-04-05 02:37:08,397 INFO L226 Difference]: Without dead ends: 36
[2022-04-05 02:37:08,397 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-04-05 02:37:08,398 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2022-04-05 02:37:08,399 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 93 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2022-04-05 02:37:08,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2022-04-05 02:37:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35.
[2022-04-05 02:37:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-04-05 02:37:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions.
[2022-04-05 02:37:08,412 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 33
[2022-04-05 02:37:08,413 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-05 02:37:08,415 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions.
[2022-04-05 02:37:08,415 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5)
[2022-04-05 02:37:08,415 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions.
[2022-04-05 02:37:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-04-05 02:37:08,417 INFO L491 BasicCegarLoop]: Found error trace
[2022-04-05 02:37:08,417 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-05 02:37:08,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-04-05 02:37:08,622 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-05 02:37:08,623 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-04-05 02:37:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-04-05 02:37:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash -397056057, now seen corresponding path program 1 times
[2022-04-05 02:37:08,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-04-05 02:37:08,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530011312]
[2022-04-05 02:37:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-05 02:37:08,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-05 02:37:08,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-04-05 02:37:08,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002135926]
[2022-04-05 02:37:08,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-05 02:37:08,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-04-05 02:37:08,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-04-05 02:37:08,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-04-05 02:37:08,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-04-05 02:37:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-05 02:37:08,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-04-05 02:37:08,709 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-04-05 02:37:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-04-05 02:37:08,905 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-04-05 02:37:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-04-05 02:37:09,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-04-05 02:37:09,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530011312]
[2022-04-05 02:37:09,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-04-05 02:37:09,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002135926]
[2022-04-05 02:37:09,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002135926] provided 0 perfect and 2 imperfect interpolant sequences
[2022-04-05 02:37:09,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-04-05 02:37:09,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2022-04-05 02:37:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588878562]
[2022-04-05 02:37:09,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-04-05 02:37:09,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-04-05 02:37:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-04-05 02:37:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-04-05 02:37:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2022-04-05 02:37:09,161 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7)
[2022-04-05 02:37:09,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-05 02:37:09,372 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions.
[2022-04-05 02:37:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-04-05 02:37:09,372 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 39
[2022-04-05 02:37:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-05 02:37:09,373 INFO L225 Difference]: With dead ends: 33
[2022-04-05 02:37:09,373 INFO L226 Difference]: Without dead ends: 0
[2022-04-05 02:37:09,374 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2022-04-05 02:37:09,375 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-04-05 02:37:09,375 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 109 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-04-05 02:37:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-04-05 02:37:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-04-05 02:37:09,376 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)
[2022-04-05 02:37:09,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-04-05 02:37:09,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39
[2022-04-05 02:37:09,377 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-04-05 02:37:09,377 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-04-05 02:37:09,377 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7)
[2022-04-05 02:37:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-04-05 02:37:09,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-04-05 02:37:09,382 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-04-05 02:37:09,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-04-05 02:37:09,583 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-04-05 02:37:09,586 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2022-04-05 02:37:09,587 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-04-05 02:37:09,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 02:37:09 BasicIcfg
[2022-04-05 02:37:09,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-04-05 02:37:09,591 INFO L158 Benchmark]: Toolchain (without parser) took 7855.49ms. Allocated memory was 186.6MB in the beginning and 276.8MB in the end (delta: 90.2MB). Free memory was 129.8MB in the beginning and 235.5MB in the end (delta: -105.7MB). There was no memory consumed. Max. memory is 8.0GB.
[2022-04-05 02:37:09,591 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 186.6MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-04-05 02:37:09,591 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.10ms. Allocated memory is still 186.6MB. Free memory was 129.5MB in the beginning and 161.7MB in the end (delta: -32.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB.
[2022-04-05 02:37:09,592 INFO L158 Benchmark]: Boogie Preprocessor took 37.68ms. Allocated memory is still 186.6MB. Free memory was 161.7MB in the beginning and 160.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
[2022-04-05 02:37:09,592 INFO L158 Benchmark]: RCFGBuilder took 297.41ms. Allocated memory is still 186.6MB. Free memory was 160.1MB in the beginning and 149.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
[2022-04-05 02:37:09,592 INFO L158 Benchmark]: IcfgTransformer took 18.01ms. Allocated memory is still 186.6MB. Free memory was 149.6MB in the beginning and 148.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-04-05 02:37:09,593 INFO L158 Benchmark]: TraceAbstraction took 7186.32ms. Allocated memory was 186.6MB in the beginning and 276.8MB in the end (delta: 90.2MB). Free memory was 147.5MB in the beginning and 235.5MB in the end (delta: -88.0MB). Peak memory consumption was 2.9MB. Max. memory is 8.0GB.
[2022-04-05 02:37:09,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.19ms. Allocated memory is still 186.6MB. Free memory is still 146.5MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 310.10ms. Allocated memory is still 186.6MB. Free memory was 129.5MB in the beginning and 161.7MB in the end (delta: -32.2MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 37.68ms. Allocated memory is still 186.6MB. Free memory was 161.7MB in the beginning and 160.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB.
* RCFGBuilder took 297.41ms. Allocated memory is still 186.6MB. Free memory was 160.1MB in the beginning and 149.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB.
* IcfgTransformer took 18.01ms. Allocated memory is still 186.6MB. Free memory was 149.6MB in the beginning and 148.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* TraceAbstraction took 7186.32ms. Allocated memory was 186.6MB in the beginning and 276.8MB in the end (delta: 90.2MB). Free memory was 147.5MB in the beginning and 235.5MB in the end (delta: -88.0MB). Peak memory consumption was 2.9MB. Max. memory is 8.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 14]: 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 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 236 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 156 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 80 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 317 SizeOfPredicates, 9 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 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!
[2022-04-05 02:37:09,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...