/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound5.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 01:21:03,976 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 01:21:03,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 01:21:04,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 01:21:04,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 01:21:04,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 01:21:04,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 01:21:04,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-05-01 01:21:04,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-05-01 01:21:04,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-05-01 01:21:04,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-05-01 01:21:04,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-05-01 01:21:04,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-05-01 01:21:04,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 01:21:04,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 01:21:04,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 01:21:04,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 01:21:04,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 01:21:04,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 01:21:04,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 01:21:04,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 01:21:04,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 01:21:04,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 01:21:04,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-05-01 01:21:04,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-05-01 01:21:04,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-05-01 01:21:04,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-05-01 01:21:04,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-05-01 01:21:04,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-05-01 01:21:04,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-05-01 01:21:04,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-05-01 01:21:04,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-05-01 01:21:04,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-05-01 01:21:04,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-05-01 01:21:04,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-05-01 01:21:04,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-05-01 01:21:04,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-05-01 01:21:04,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-05-01 01:21:04,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-05-01 01:21:04,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-05-01 01:21:04,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 01:21:04,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2021-05-01 01:21:04,080 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 01:21:04,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 01:21:04,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-05-01 01:21:04,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-05-01 01:21:04,082 INFO L138 SettingsManager]: * Use SBE=true
[2021-05-01 01:21:04,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 01:21:04,083 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 01:21:04,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 01:21:04,083 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 01:21:04,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 01:21:04,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 01:21:04,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 01:21:04,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 01:21:04,084 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 01:21:04,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 01:21:04,084 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 01:21:04,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 01:21:04,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 01:21:04,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 01:21:04,085 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 01:21:04,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 01:21:04,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 01:21:04,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-05-01 01:21:04,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-05-01 01:21:04,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-05-01 01:21:04,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-05-01 01:21:04,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 01:21:04,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-05-01 01:21:04,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 01:21:04,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 01:21:04,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 01:21:04,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 01:21:04,343 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 01:21:04,344 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 01:21:04,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound5.c
[2021-05-01 01:21:04,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e378378/abcd9a3ac3ba4f69af627801f525ba78/FLAG75f24887a
[2021-05-01 01:21:04,778 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 01:21:04,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire2_unwindbound5.c
[2021-05-01 01:21:04,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e378378/abcd9a3ac3ba4f69af627801f525ba78/FLAG75f24887a
[2021-05-01 01:21:04,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e378378/abcd9a3ac3ba4f69af627801f525ba78
[2021-05-01 01:21:04,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 01:21:04,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 01:21:04,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 01:21:04,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 01:21:04,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 01:21:04,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:04,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76813e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04, skipping insertion in model container
[2021-05-01 01:21:04,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:04,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 01:21:04,820 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 01:21:04,904 WARN L224 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/freire2_unwindbound5.c[709,722]
[2021-05-01 01:21:04,930 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 01:21:04,935 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 01:21:04,959 WARN L224 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/freire2_unwindbound5.c[709,722]
[2021-05-01 01:21:04,983 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 01:21:04,996 INFO L208 MainTranslator]: Completed translation
[2021-05-01 01:21:04,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04 WrapperNode
[2021-05-01 01:21:04,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 01:21:04,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 01:21:04,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 01:21:04,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 01:21:05,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:05,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:05,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:05,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:05,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:05,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:05,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (1/1) ...
[2021-05-01 01:21:05,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 01:21:05,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 01:21:05,019 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 01:21:05,019 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 01:21:05,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 01:21:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 01:21:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 01:21:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 01:21:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 01:21:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 01:21:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 01:21:05,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 01:21:05,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 01:21:05,259 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 01:21:05,259 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-05-01 01:21:05,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 01:21:05 BoogieIcfgContainer
[2021-05-01 01:21:05,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 01:21:05,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 01:21:05,261 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 01:21:05,263 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 01:21:05,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 01:21:04" (1/3) ...
[2021-05-01 01:21:05,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526db354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 01:21:05, skipping insertion in model container
[2021-05-01 01:21:05,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:21:04" (2/3) ...
[2021-05-01 01:21:05,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@526db354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 01:21:05, skipping insertion in model container
[2021-05-01 01:21:05,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 01:21:05" (3/3) ...
[2021-05-01 01:21:05,265 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c
[2021-05-01 01:21:05,268 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-05-01 01:21:05,285 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 01:21:05,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 01:21:05,326 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 01:21:05,326 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 01:21:05,326 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-05-01 01:21:05,326 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 01:21:05,326 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 01:21:05,326 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 01:21:05,326 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 01:21:05,326 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 01:21:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2021-05-01 01:21:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-05-01 01:21:05,340 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 01:21:05,340 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 01:21:05,341 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 01:21:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 01:21:05,344 INFO L82 PathProgramCache]: Analyzing trace with hash -643130361, now seen corresponding path program 1 times
[2021-05-01 01:21:05,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 01:21:05,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135034358]
[2021-05-01 01:21:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 01:21:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 01:21:05,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 01:21:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 01:21:05,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 01:21:05,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 01:21:05,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135034358]
[2021-05-01 01:21:05,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135034358] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 01:21:05,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 01:21:05,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 01:21:05,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818601651]
[2021-05-01 01:21:05,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 01:21:05,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 01:21:05,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 01:21:05,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 01:21:05,558 INFO L87 Difference]: Start difference. First operand has 26 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 01:21:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 01:21:05,621 INFO L93 Difference]: Finished difference Result 47 states and 70 transitions.
[2021-05-01 01:21:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 01:21:05,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-05-01 01:21:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 01:21:05,627 INFO L225 Difference]: With dead ends: 47
[2021-05-01 01:21:05,627 INFO L226 Difference]: Without dead ends: 22
[2021-05-01 01:21:05,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 01:21:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2021-05-01 01:21:05,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21.
[2021-05-01 01:21:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-05-01 01:21:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions.
[2021-05-01 01:21:05,653 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 11
[2021-05-01 01:21:05,653 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 01:21:05,654 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions.
[2021-05-01 01:21:05,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 01:21:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions.
[2021-05-01 01:21:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-05-01 01:21:05,655 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 01:21:05,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 01:21:05,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 01:21:05,655 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 01:21:05,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 01:21:05,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1070997212, now seen corresponding path program 1 times
[2021-05-01 01:21:05,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 01:21:05,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400611601]
[2021-05-01 01:21:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 01:21:05,666 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-05-01 01:21:05,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771717818]
[2021-05-01 01:21:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-05-01 01:21:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 01:21:05,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-05-01 01:21:05,724 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-05-01 01:21:05,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,770 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:21:05,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:21:05,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-05-01 01:21:05,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,782 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:21:05,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,785 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:21:05,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:21:05,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-05-01 01:21:05,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-05-01 01:21:05,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,805 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:21:05,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:21:05,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8
[2021-05-01 01:21:05,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,812 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:21:05,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:21:05,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8
[2021-05-01 01:21:05,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:21:05,822 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size
[2021-05-01 01:21:05,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:21:05,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:21:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-05-01 01:21:05,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 01:21:05,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400611601]
[2021-05-01 01:21:05,838 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-05-01 01:21:05,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771717818]
[2021-05-01 01:21:05,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771717818] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 01:21:05,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 01:21:05,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-05-01 01:21:05,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212537742]
[2021-05-01 01:21:05,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-05-01 01:21:05,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 01:21:05,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-05-01 01:21:05,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-05-01 01:21:05,842 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 01:21:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 01:21:05,856 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions.
[2021-05-01 01:21:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-05-01 01:21:05,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12
[2021-05-01 01:21:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 01:21:05,857 INFO L225 Difference]: With dead ends: 32
[2021-05-01 01:21:05,857 INFO L226 Difference]: Without dead ends: 23
[2021-05-01 01:21:05,858 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-05-01 01:21:05,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2021-05-01 01:21:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2021-05-01 01:21:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2021-05-01 01:21:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions.
[2021-05-01 01:21:05,867 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12
[2021-05-01 01:21:05,867 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 01:21:05,868 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions.
[2021-05-01 01:21:05,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-05-01 01:21:05,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions.
[2021-05-01 01:21:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-05-01 01:21:05,868 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 01:21:05,868 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 01:21:06,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2021-05-01 01:21:06,084 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 01:21:06,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 01:21:06,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1072665508, now seen corresponding path program 1 times
[2021-05-01 01:21:06,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 01:21:06,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967585285]
[2021-05-01 01:21:06,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 01:21:06,092 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-05-01 01:21:06,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342097724]
[2021-05-01 01:21:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-05-01 01:21:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-05-01 01:21:06,150 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-05-01 01:21:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-05-01 01:21:06,161 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-05-01 01:21:06,181 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-05-01 01:21:06,181 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 01:21:06,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-05-01 01:21:06,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 01:21:06 BoogieIcfgContainer
[2021-05-01 01:21:06,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 01:21:06,417 INFO L168 Benchmark]: Toolchain (without parser) took 1617.93 ms. Allocated memory is still 204.5 MB. Free memory was 168.0 MB in the beginning and 95.3 MB in the end (delta: 72.7 MB). Peak memory consumption was 71.0 MB. Max. memory is 8.0 GB.
[2021-05-01 01:21:06,417 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 204.5 MB. Free memory is still 184.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 01:21:06,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.13 ms. Allocated memory is still 204.5 MB. Free memory was 167.8 MB in the beginning and 186.9 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB.
[2021-05-01 01:21:06,418 INFO L168 Benchmark]: Boogie Preprocessor took 20.55 ms. Allocated memory is still 204.5 MB. Free memory was 186.9 MB in the beginning and 185.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2021-05-01 01:21:06,418 INFO L168 Benchmark]: RCFGBuilder took 241.56 ms. Allocated memory is still 204.5 MB. Free memory was 185.5 MB in the beginning and 169.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2021-05-01 01:21:06,418 INFO L168 Benchmark]: TraceAbstraction took 1155.41 ms. Allocated memory is still 204.5 MB. Free memory was 169.2 MB in the beginning and 95.3 MB in the end (delta: 73.9 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB.
[2021-05-01 01:21:06,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.10 ms. Allocated memory is still 204.5 MB. Free memory is still 184.6 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 195.13 ms. Allocated memory is still 204.5 MB. Free memory was 167.8 MB in the beginning and 186.9 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 20.55 ms. Allocated memory is still 204.5 MB. Free memory was 186.9 MB in the beginning and 185.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 241.56 ms. Allocated memory is still 204.5 MB. Free memory was 185.5 MB in the beginning and 169.8 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1155.41 ms. Allocated memory is still 204.5 MB. Free memory was 169.2 MB in the beginning and 95.3 MB in the end (delta: 73.9 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: overapproximation of to_int at line 34.
Possible FailurePath:
[L24] int counter = 0;
VAL [\old(counter)=9, counter=0]
[L26] int r;
[L27] double a, x, s;
[L28] a = __VERIFIER_nondet_double()
[L29] x = a
[L30] s = 3.25
[L31] r = 1
VAL [\old(counter)=0, a=2, counter=0, r=1, s=13/4, x=2]
[L33] EXPR counter++
VAL [\old(counter)=0, a=2, counter=1, counter++=0, r=1, s=13/4, x=2]
[L33] COND TRUE counter++<5
[L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1)
VAL [\old(cond)=0, \old(counter)=0, counter=1]
[L17] COND TRUE !(cond)
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1]
[L19] reach_error()
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1077.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 7.7ms, AutomataDifference: 98.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 55 SDtfs, 6 SDslu, 48 SDs, 0 SdLazy, 23 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 23.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.3ms SsaConstructionTime, 59.1ms SatisfiabilityAnalysisTime, 252.3ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 1 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...