/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/fermat1-ll_valuebound1.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-d966a43
[2022-01-31 14:36:11,240 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-01-31 14:36:11,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-01-31 14:36:11,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-01-31 14:36:11,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-01-31 14:36:11,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-01-31 14:36:11,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-01-31 14:36:11,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-01-31 14:36:11,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-01-31 14:36:11,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-01-31 14:36:11,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-01-31 14:36:11,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-01-31 14:36:11,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-01-31 14:36:11,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-01-31 14:36:11,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-01-31 14:36:11,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-01-31 14:36:11,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-01-31 14:36:11,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-01-31 14:36:11,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-01-31 14:36:11,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-01-31 14:36:11,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-01-31 14:36:11,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-01-31 14:36:11,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-01-31 14:36:11,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-01-31 14:36:11,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-01-31 14:36:11,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-01-31 14:36:11,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-01-31 14:36:11,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-01-31 14:36:11,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-01-31 14:36:11,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-01-31 14:36:11,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-01-31 14:36:11,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-01-31 14:36:11,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-01-31 14:36:11,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-01-31 14:36:11,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-01-31 14:36:11,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-01-31 14:36:11,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-01-31 14:36:11,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-01-31 14:36:11,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-01-31 14:36:11,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-01-31 14:36:11,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-01-31 14:36:11,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2022-01-31 14:36:11,378 INFO L113 SettingsManager]: Loading preferences was successful
[2022-01-31 14:36:11,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-01-31 14:36:11,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-01-31 14:36:11,380 INFO L138 SettingsManager]: * sizeof long=4
[2022-01-31 14:36:11,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-01-31 14:36:11,380 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-01-31 14:36:11,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-01-31 14:36:11,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-01-31 14:36:11,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-01-31 14:36:11,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-01-31 14:36:11,381 INFO L138 SettingsManager]: * sizeof long double=12
[2022-01-31 14:36:11,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-01-31 14:36:11,381 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-01-31 14:36:11,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-01-31 14:36:11,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-01-31 14:36:11,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-01-31 14:36:11,382 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-01-31 14:36:11,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-01-31 14:36:11,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 14:36:11,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-01-31 14:36:11,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-01-31 14:36:11,383 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-01-31 14:36:11,383 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-01-31 14:36:11,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-01-31 14:36:11,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-01-31 14:36:11,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-01-31 14:36:11,637 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-01-31 14:36:11,638 INFO L275 PluginConnector]: CDTParser initialized
[2022-01-31 14:36:11,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound1.c
[2022-01-31 14:36:11,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85aa8432e/6385e7fc9f8a465896ce25ced4b83d2b/FLAGad41dc81b
[2022-01-31 14:36:12,052 INFO L306 CDTParser]: Found 1 translation units.
[2022-01-31 14:36:12,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound1.c
[2022-01-31 14:36:12,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85aa8432e/6385e7fc9f8a465896ce25ced4b83d2b/FLAGad41dc81b
[2022-01-31 14:36:12,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85aa8432e/6385e7fc9f8a465896ce25ced4b83d2b
[2022-01-31 14:36:12,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-01-31 14:36:12,071 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-01-31 14:36:12,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-01-31 14:36:12,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-01-31 14:36:12,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-01-31 14:36:12,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cedeebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12, skipping insertion in model container
[2022-01-31 14:36:12,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-01-31 14:36:12,097 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-01-31 14:36:12,217 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/fermat1-ll_valuebound1.c[535,548]
[2022-01-31 14:36:12,244 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 14:36:12,250 INFO L203 MainTranslator]: Completed pre-run
[2022-01-31 14:36:12,258 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/fermat1-ll_valuebound1.c[535,548]
[2022-01-31 14:36:12,266 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-01-31 14:36:12,275 INFO L208 MainTranslator]: Completed translation
[2022-01-31 14:36:12,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12 WrapperNode
[2022-01-31 14:36:12,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-01-31 14:36:12,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-01-31 14:36:12,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-01-31 14:36:12,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-01-31 14:36:12,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-01-31 14:36:12,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-01-31 14:36:12,298 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-01-31 14:36:12,298 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-01-31 14:36:12,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-01-31 14:36:12,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 14:36:12,327 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)
[2022-01-31 14:36:12,329 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
[2022-01-31 14:36:12,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-01-31 14:36:12,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-01-31 14:36:12,356 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-01-31 14:36:12,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-01-31 14:36:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-01-31 14:36:12,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-01-31 14:36:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-01-31 14:36:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-01-31 14:36:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-01-31 14:36:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-01-31 14:36:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2022-01-31 14:36:12,357 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-01-31 14:36:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-01-31 14:36:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-01-31 14:36:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-01-31 14:36:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-01-31 14:36:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-01-31 14:36:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-01-31 14:36:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-01-31 14:36:12,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-01-31 14:36:12,407 INFO L234 CfgBuilder]: Building ICFG
[2022-01-31 14:36:12,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-01-31 14:36:12,508 INFO L275 CfgBuilder]: Performing block encoding
[2022-01-31 14:36:12,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-01-31 14:36:12,513 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2022-01-31 14:36:12,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:36:12 BoogieIcfgContainer
[2022-01-31 14:36:12,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-01-31 14:36:12,515 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-01-31 14:36:12,515 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-01-31 14:36:12,516 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-01-31 14:36:12,519 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:36:12" (1/1) ...
[2022-01-31 14:36:12,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:36:12 BasicIcfg
[2022-01-31 14:36:12,534 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-01-31 14:36:12,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-01-31 14:36:12,536 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-01-31 14:36:12,538 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-01-31 14:36:12,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:36:12" (1/4) ...
[2022-01-31 14:36:12,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4d8b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:36:12, skipping insertion in model container
[2022-01-31 14:36:12,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:36:12" (2/4) ...
[2022-01-31 14:36:12,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4d8b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:36:12, skipping insertion in model container
[2022-01-31 14:36:12,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:36:12" (3/4) ...
[2022-01-31 14:36:12,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4d8b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:36:12, skipping insertion in model container
[2022-01-31 14:36:12,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:36:12" (4/4) ...
[2022-01-31 14:36:12,540 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound1.cJordan
[2022-01-31 14:36:12,544 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2022-01-31 14:36:12,544 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-01-31 14:36:12,579 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-01-31 14:36:12,585 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR
[2022-01-31 14:36:12,585 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-01-31 14:36:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)
[2022-01-31 14:36:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-31 14:36:12,617 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 14:36:12,618 INFO L514 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]
[2022-01-31 14:36:12,618 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 14:36:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 14:36:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1042421720, now seen corresponding path program 1 times
[2022-01-31 14:36:12,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 14:36:12,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477835066]
[2022-01-31 14:36:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 14:36:12,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 14:36:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 14:36:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-01-31 14:36:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 14:36:12,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-01-31 14:36:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 14:36:12,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2022-01-31 14:36:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 14:36:12,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2022-01-31 14:36:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 14:36:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22
[2022-01-31 14:36:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 14:36:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-01-31 14:36:12,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 14:36:12,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477835066]
[2022-01-31 14:36:12,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477835066] provided 1 perfect and 0 imperfect interpolant sequences
[2022-01-31 14:36:12,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-01-31 14:36:12,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-01-31 14:36:12,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708537468]
[2022-01-31 14:36:12,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 14:36:12,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-01-31 14:36:12,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 14:36:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-01-31 14:36:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-01-31 14:36:12,915 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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)
[2022-01-31 14:36:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 14:36:12,977 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions.
[2022-01-31 14:36:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-01-31 14:36:12,979 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
[2022-01-31 14:36:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 14:36:12,985 INFO L225 Difference]: With dead ends: 37
[2022-01-31 14:36:12,985 INFO L226 Difference]: Without dead ends: 32
[2022-01-31 14:36:12,986 INFO L932 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
[2022-01-31 14:36:12,989 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-01-31 14:36:12,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 40 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-01-31 14:36:13,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-01-31 14:36:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2022-01-31 14:36:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 14:36:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions.
[2022-01-31 14:36:13,038 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33
[2022-01-31 14:36:13,038 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 14:36:13,038 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions.
[2022-01-31 14:36:13,039 INFO L471 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)
[2022-01-31 14:36:13,039 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions.
[2022-01-31 14:36:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2022-01-31 14:36:13,040 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 14:36:13,040 INFO L514 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]
[2022-01-31 14:36:13,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-01-31 14:36:13,041 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 14:36:13,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 14:36:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash 104571547, now seen corresponding path program 1 times
[2022-01-31 14:36:13,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 14:36:13,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842021835]
[2022-01-31 14:36:13,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 14:36:13,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 14:36:13,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-31 14:36:13,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914526361]
[2022-01-31 14:36:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 14:36:13,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-31 14:36:13,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 14:36:13,062 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)
[2022-01-31 14:36:13,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-01-31 14:36:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 14:36:13,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core
[2022-01-31 14:36:13,141 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-01-31 14:36:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2022-01-31 14:36:13,532 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-01-31 14:36:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-01-31 14:36:13,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 14:36:13,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842021835]
[2022-01-31 14:36:13,711 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-31 14:36:13,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914526361]
[2022-01-31 14:36:13,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914526361] provided 1 perfect and 1 imperfect interpolant sequences
[2022-01-31 14:36:13,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-01-31 14:36:13,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11
[2022-01-31 14:36:13,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244924751]
[2022-01-31 14:36:13,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-01-31 14:36:13,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-01-31 14:36:13,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 14:36:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-01-31 14:36:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110
[2022-01-31 14:36:13,720 INFO L87 Difference]: Start difference. First operand 32 states and 40 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)
[2022-01-31 14:36:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 14:36:13,903 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions.
[2022-01-31 14:36:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-01-31 14:36:13,903 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
[2022-01-31 14:36:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 14:36:13,904 INFO L225 Difference]: With dead ends: 36
[2022-01-31 14:36:13,904 INFO L226 Difference]: Without dead ends: 34
[2022-01-31 14:36:13,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2022-01-31 14:36:13,906 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-01-31 14:36:13,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 107 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-01-31 14:36:13,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2022-01-31 14:36:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2022-01-31 14:36:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2022-01-31 14:36:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions.
[2022-01-31 14:36:13,912 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 33
[2022-01-31 14:36:13,913 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 14:36:13,913 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions.
[2022-01-31 14:36:13,913 INFO L471 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)
[2022-01-31 14:36:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions.
[2022-01-31 14:36:13,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-01-31 14:36:13,914 INFO L506 BasicCegarLoop]: Found error trace
[2022-01-31 14:36:13,915 INFO L514 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]
[2022-01-31 14:36:13,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-01-31 14:36:14,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-31 14:36:14,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-01-31 14:36:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-01-31 14:36:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash -844389750, now seen corresponding path program 1 times
[2022-01-31 14:36:14,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-01-31 14:36:14,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973470460]
[2022-01-31 14:36:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 14:36:14,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-01-31 14:36:14,154 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-01-31 14:36:14,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536356703]
[2022-01-31 14:36:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-01-31 14:36:14,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-01-31 14:36:14,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-01-31 14:36:14,164 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)
[2022-01-31 14:36:14,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-01-31 14:36:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-01-31 14:36:14,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-01-31 14:36:14,226 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-01-31 14:36:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-01-31 14:36:14,356 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-01-31 14:36:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2022-01-31 14:36:14,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-01-31 14:36:14,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973470460]
[2022-01-31 14:36:14,551 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-01-31 14:36:14,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536356703]
[2022-01-31 14:36:14,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536356703] provided 0 perfect and 2 imperfect interpolant sequences
[2022-01-31 14:36:14,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-01-31 14:36:14,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10
[2022-01-31 14:36:14,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981222901]
[2022-01-31 14:36:14,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-01-31 14:36:14,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-01-31 14:36:14,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-01-31 14:36:14,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-01-31 14:36:14,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2022-01-31 14:36:14,555 INFO L87 Difference]: Start difference. First operand 34 states and 41 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)
[2022-01-31 14:36:14,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-01-31 14:36:14,649 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions.
[2022-01-31 14:36:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-01-31 14:36:14,649 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
[2022-01-31 14:36:14,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-01-31 14:36:14,650 INFO L225 Difference]: With dead ends: 32
[2022-01-31 14:36:14,650 INFO L226 Difference]: Without dead ends: 0
[2022-01-31 14:36:14,650 INFO L932 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
[2022-01-31 14:36:14,651 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-01-31 14:36:14,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 210 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-01-31 14:36:14,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-01-31 14:36:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-01-31 14:36:14,653 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)
[2022-01-31 14:36:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-01-31 14:36:14,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39
[2022-01-31 14:36:14,653 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-01-31 14:36:14,653 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-01-31 14:36:14,654 INFO L471 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)
[2022-01-31 14:36:14,654 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-01-31 14:36:14,654 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-01-31 14:36:14,656 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-01-31 14:36:14,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-01-31 14:36:14,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-01-31 14:36:14,884 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2022-01-31 14:36:14,885 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-01-31 14:36:14,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:36:14 BasicIcfg
[2022-01-31 14:36:14,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-01-31 14:36:14,888 INFO L158 Benchmark]: Toolchain (without parser) took 2816.50ms. Allocated memory was 216.0MB in the beginning and 277.9MB in the end (delta: 61.9MB). Free memory was 161.4MB in the beginning and 236.7MB in the end (delta: -75.3MB). There was no memory consumed. Max. memory is 8.0GB.
[2022-01-31 14:36:14,888 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 216.0MB. Free memory is still 177.5MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-01-31 14:36:14,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.01ms. Allocated memory is still 216.0MB. Free memory was 161.2MB in the beginning and 186.1MB in the end (delta: -25.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB.
[2022-01-31 14:36:14,889 INFO L158 Benchmark]: Boogie Preprocessor took 21.78ms. Allocated memory is still 216.0MB. Free memory was 186.1MB in the beginning and 184.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-01-31 14:36:14,889 INFO L158 Benchmark]: RCFGBuilder took 216.70ms. Allocated memory is still 216.0MB. Free memory was 184.6MB in the beginning and 173.5MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-01-31 14:36:14,889 INFO L158 Benchmark]: IcfgTransformer took 19.01ms. Allocated memory is still 216.0MB. Free memory was 173.5MB in the beginning and 172.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-01-31 14:36:14,889 INFO L158 Benchmark]: TraceAbstraction took 2351.71ms. Allocated memory was 216.0MB in the beginning and 277.9MB in the end (delta: 61.9MB). Free memory was 171.5MB in the beginning and 236.7MB in the end (delta: -65.2MB). There was no memory consumed. Max. memory is 8.0GB.
[2022-01-31 14:36:14,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.10ms. Allocated memory is still 216.0MB. Free memory is still 177.5MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 203.01ms. Allocated memory is still 216.0MB. Free memory was 161.2MB in the beginning and 186.1MB in the end (delta: -25.0MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 21.78ms. Allocated memory is still 216.0MB. Free memory was 186.1MB in the beginning and 184.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 216.70ms. Allocated memory is still 216.0MB. Free memory was 184.6MB in the beginning and 173.5MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
* IcfgTransformer took 19.01ms. Allocated memory is still 216.0MB. Free memory was 173.5MB in the beginning and 172.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* TraceAbstraction took 2351.71ms. Allocated memory was 216.0MB in the beginning and 277.9MB in the end (delta: 61.9MB). Free memory was 171.5MB in the beginning and 236.7MB in the end (delta: -65.2MB). There was no memory consumed. 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, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 357 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 93 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 533 SizeOfPredicates, 12 NumberOfNonLiveVariables, 209 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 113/124 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!
[2022-01-31 14:36:14,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...