/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/geo1-u_unwindbound1.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.1-dev-1a84f73
[2021-05-01 01:22:27,475 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-05-01 01:22:27,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-05-01 01:22:27,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-05-01 01:22:27,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-05-01 01:22:27,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-05-01 01:22:27,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-05-01 01:22:27,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-05-01 01:22:27,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-05-01 01:22:27,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-05-01 01:22:27,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-05-01 01:22:27,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-05-01 01:22:27,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-05-01 01:22:27,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-05-01 01:22:27,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-05-01 01:22:27,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-05-01 01:22:27,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-05-01 01:22:27,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-05-01 01:22:27,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-05-01 01:22:27,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-05-01 01:22:27,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-05-01 01:22:27,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-05-01 01:22:27,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-05-01 01:22:27,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-05-01 01:22:27,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-05-01 01:22:27,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-05-01 01:22:27,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-05-01 01:22:27,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-05-01 01:22:27,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-05-01 01:22:27,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-05-01 01:22:27,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-05-01 01:22:27,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-05-01 01:22:27,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-05-01 01:22:27,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-05-01 01:22:27,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-05-01 01:22:27,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-05-01 01:22:27,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-05-01 01:22:27,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-05-01 01:22:27,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-05-01 01:22:27,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-05-01 01:22:27,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-05-01 01:22:27,573 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 01:22:27,621 INFO L113 SettingsManager]: Loading preferences was successful
[2021-05-01 01:22:27,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-05-01 01:22:27,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-05-01 01:22:27,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-05-01 01:22:27,625 INFO L138 SettingsManager]: * Use SBE=true
[2021-05-01 01:22:27,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-05-01 01:22:27,625 INFO L138 SettingsManager]: * sizeof long=4
[2021-05-01 01:22:27,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-05-01 01:22:27,625 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-05-01 01:22:27,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-05-01 01:22:27,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-05-01 01:22:27,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-05-01 01:22:27,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-05-01 01:22:27,627 INFO L138 SettingsManager]: * sizeof long double=12
[2021-05-01 01:22:27,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-05-01 01:22:27,627 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-05-01 01:22:27,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-05-01 01:22:27,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-05-01 01:22:27,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-05-01 01:22:27,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-05-01 01:22:27,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-05-01 01:22:27,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-05-01 01:22:27,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-05-01 01:22:27,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-05-01 01:22:27,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-05-01 01:22:27,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-05-01 01:22:27,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-05-01 01:22:27,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-05-01 01:22:27,629 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-05-01 01:22:27,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-05-01 01:22:27,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-05-01 01:22:27,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-05-01 01:22:27,933 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-05-01 01:22:27,934 INFO L275 PluginConnector]: CDTParser initialized
[2021-05-01 01:22:27,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound1.c
[2021-05-01 01:22:27,994 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41522c3a8/0d2ed51d6b494201b35a69c6162029de/FLAG39c038939
[2021-05-01 01:22:28,342 INFO L306 CDTParser]: Found 1 translation units.
[2021-05-01 01:22:28,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound1.c
[2021-05-01 01:22:28,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41522c3a8/0d2ed51d6b494201b35a69c6162029de/FLAG39c038939
[2021-05-01 01:22:28,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41522c3a8/0d2ed51d6b494201b35a69c6162029de
[2021-05-01 01:22:28,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-05-01 01:22:28,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2021-05-01 01:22:28,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-05-01 01:22:28,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-05-01 01:22:28,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-05-01 01:22:28,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 01:22:28" (1/1) ...
[2021-05-01 01:22:28,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c2fa5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:28, skipping insertion in model container
[2021-05-01 01:22:28,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 01:22:28" (1/1) ...
[2021-05-01 01:22:28,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-05-01 01:22:28,814 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-05-01 01:22:28,961 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/geo1-u_unwindbound1.c[563,576]
[2021-05-01 01:22:28,975 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 01:22:28,982 INFO L203 MainTranslator]: Completed pre-run
[2021-05-01 01:22:28,994 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/geo1-u_unwindbound1.c[563,576]
[2021-05-01 01:22:29,006 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-05-01 01:22:29,021 INFO L208 MainTranslator]: Completed translation
[2021-05-01 01:22:29,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29 WrapperNode
[2021-05-01 01:22:29,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-05-01 01:22:29,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-05-01 01:22:29,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-05-01 01:22:29,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-05-01 01:22:29,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (1/1) ...
[2021-05-01 01:22:29,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (1/1) ...
[2021-05-01 01:22:29,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (1/1) ...
[2021-05-01 01:22:29,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (1/1) ...
[2021-05-01 01:22:29,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (1/1) ...
[2021-05-01 01:22:29,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (1/1) ...
[2021-05-01 01:22:29,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (1/1) ...
[2021-05-01 01:22:29,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-05-01 01:22:29,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-05-01 01:22:29,106 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-05-01 01:22:29,106 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-05-01 01:22:29,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (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 01:22:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-05-01 01:22:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-05-01 01:22:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2021-05-01 01:22:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2021-05-01 01:22:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2021-05-01 01:22:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-05-01 01:22:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-05-01 01:22:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2021-05-01 01:22:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2021-05-01 01:22:29,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-05-01 01:22:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int
[2021-05-01 01:22:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2021-05-01 01:22:29,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2021-05-01 01:22:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-05-01 01:22:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-05-01 01:22:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-05-01 01:22:29,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-05-01 01:22:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-05-01 01:22:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-05-01 01:22:29,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-05-01 01:22:29,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-05-01 01:22:29,444 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-05-01 01:22:29,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 01:22:29 BoogieIcfgContainer
[2021-05-01 01:22:29,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-05-01 01:22:29,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-05-01 01:22:29,446 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-05-01 01:22:29,448 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-05-01 01:22:29,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 01:22:28" (1/3) ...
[2021-05-01 01:22:29,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6d236f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 01:22:29, skipping insertion in model container
[2021-05-01 01:22:29,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 01:22:29" (2/3) ...
[2021-05-01 01:22:29,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6d236f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 01:22:29, skipping insertion in model container
[2021-05-01 01:22:29,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 01:22:29" (3/3) ...
[2021-05-01 01:22:29,450 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound1.c
[2021-05-01 01:22:29,454 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-05-01 01:22:29,457 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-05-01 01:22:29,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-05-01 01:22:29,490 INFO L376 AbstractCegarLoop]: Interprodecural is true
[2021-05-01 01:22:29,491 INFO L377 AbstractCegarLoop]: Hoare is true
[2021-05-01 01:22:29,491 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-05-01 01:22:29,491 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-05-01 01:22:29,491 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-05-01 01:22:29,491 INFO L381 AbstractCegarLoop]: Difference is false
[2021-05-01 01:22:29,491 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-05-01 01:22:29,491 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-05-01 01:22:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-05-01 01:22:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-05-01 01:22:29,523 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 01:22:29,524 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 01:22:29,524 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 01:22:29,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 01:22:29,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1864317590, now seen corresponding path program 1 times
[2021-05-01 01:22:29,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 01:22:29,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973002851]
[2021-05-01 01:22:29,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 01:22:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 01:22:29,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:29,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:29,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:29,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:29,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-05-01 01:22:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 01:22:29,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:29,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:29,735 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 01:22:29,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 01:22:29,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973002851]
[2021-05-01 01:22:29,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973002851] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 01:22:29,738 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 01:22:29,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-05-01 01:22:29,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81720633]
[2021-05-01 01:22:29,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-05-01 01:22:29,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 01:22:29,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-05-01 01:22:29,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 01:22:29,759 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 01:22:29,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 01:22:29,838 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions.
[2021-05-01 01:22:29,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-05-01 01:22:29,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12
[2021-05-01 01:22:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 01:22:29,846 INFO L225 Difference]: With dead ends: 41
[2021-05-01 01:22:29,846 INFO L226 Difference]: Without dead ends: 19
[2021-05-01 01:22:29,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-05-01 01:22:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-05-01 01:22:29,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18.
[2021-05-01 01:22:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-05-01 01:22:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions.
[2021-05-01 01:22:29,886 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12
[2021-05-01 01:22:29,886 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 01:22:29,886 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions.
[2021-05-01 01:22:29,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 01:22:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions.
[2021-05-01 01:22:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-05-01 01:22:29,888 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 01:22:29,888 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 01:22:29,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-05-01 01:22:29,888 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 01:22:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 01:22:29,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2049175951, now seen corresponding path program 1 times
[2021-05-01 01:22:29,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 01:22:29,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669625837]
[2021-05-01 01:22:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 01:22:29,928 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-05-01 01:22:29,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905751119]
[2021-05-01 01:22:29,928 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 01:22:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 01:22:30,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-05-01 01:22:30,033 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-05-01 01:22:30,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9
[2021-05-01 01:22:30,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:22:30,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,144 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size
[2021-05-01 01:22:30,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,153 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 01:22:30,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 01:22:30,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669625837]
[2021-05-01 01:22:30,153 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-05-01 01:22:30,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905751119]
[2021-05-01 01:22:30,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905751119] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 01:22:30,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 01:22:30,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-05-01 01:22:30,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890579389]
[2021-05-01 01:22:30,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-05-01 01:22:30,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 01:22:30,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-05-01 01:22:30,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-05-01 01:22:30,157 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 01:22:30,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 01:22:30,214 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions.
[2021-05-01 01:22:30,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-05-01 01:22:30,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 01:22:30,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 01:22:30,215 INFO L225 Difference]: With dead ends: 29
[2021-05-01 01:22:30,215 INFO L226 Difference]: Without dead ends: 27
[2021-05-01 01:22:30,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-05-01 01:22:30,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-05-01 01:22:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25.
[2021-05-01 01:22:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2021-05-01 01:22:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions.
[2021-05-01 01:22:30,232 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12
[2021-05-01 01:22:30,232 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 01:22:30,232 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions.
[2021-05-01 01:22:30,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 01:22:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions.
[2021-05-01 01:22:30,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-05-01 01:22:30,233 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 01:22:30,233 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 01:22:30,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2021-05-01 01:22:30,457 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 01:22:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 01:22:30,458 INFO L82 PathProgramCache]: Analyzing trace with hash -975399299, now seen corresponding path program 1 times
[2021-05-01 01:22:30,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 01:22:30,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702768697]
[2021-05-01 01:22:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 01:22:30,466 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-05-01 01:22:30,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203624492]
[2021-05-01 01:22:30,467 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 01:22:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-05-01 01:22:30,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-05-01 01:22:30,528 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-05-01 01:22:30,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,553 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:22:30,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:22:30,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-05-01 01:22:30,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,557 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:22:30,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,559 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:22:30,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:22:30,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12
[2021-05-01 01:22:30,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13
[2021-05-01 01:22:30,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,576 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:22:30,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:22:30,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8
[2021-05-01 01:22:30,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,579 WARN L159 QuantifierPusher]: Ignoring assumption.
[2021-05-01 01:22:30,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7
[2021-05-01 01:22:30,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8
[2021-05-01 01:22:30,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3
[2021-05-01 01:22:30,588 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size
[2021-05-01 01:22:30,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size
[2021-05-01 01:22:30,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1
[2021-05-01 01:22:30,601 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 01:22:30,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-05-01 01:22:30,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702768697]
[2021-05-01 01:22:30,602 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2021-05-01 01:22:30,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203624492]
[2021-05-01 01:22:30,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203624492] provided 1 perfect and 0 imperfect interpolant sequences
[2021-05-01 01:22:30,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-05-01 01:22:30,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-05-01 01:22:30,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965183019]
[2021-05-01 01:22:30,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-05-01 01:22:30,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-05-01 01:22:30,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-05-01 01:22:30,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-05-01 01:22:30,604 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 01:22:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-05-01 01:22:30,614 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions.
[2021-05-01 01:22:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-05-01 01:22:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13
[2021-05-01 01:22:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-05-01 01:22:30,616 INFO L225 Difference]: With dead ends: 33
[2021-05-01 01:22:30,617 INFO L226 Difference]: Without dead ends: 25
[2021-05-01 01:22:30,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-05-01 01:22:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2021-05-01 01:22:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2021-05-01 01:22:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3)
[2021-05-01 01:22:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions.
[2021-05-01 01:22:30,622 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13
[2021-05-01 01:22:30,622 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-05-01 01:22:30,622 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions.
[2021-05-01 01:22:30,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 01:22:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions.
[2021-05-01 01:22:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-05-01 01:22:30,623 INFO L511 BasicCegarLoop]: Found error trace
[2021-05-01 01:22:30,623 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-01 01:22:30,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-05-01 01:22:30,839 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2021-05-01 01:22:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-05-01 01:22:30,840 INFO L82 PathProgramCache]: Analyzing trace with hash 198190047, now seen corresponding path program 1 times
[2021-05-01 01:22:30,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-05-01 01:22:30,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228635320]
[2021-05-01 01:22:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-05-01 01:22:30,869 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-05-01 01:22:30,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523792340]
[2021-05-01 01:22:30,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-05-01 01:22:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-05-01 01:22:30,930 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-05-01 01:22:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-05-01 01:22:30,951 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-05-01 01:22:30,979 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-05-01 01:22:30,979 INFO L620 BasicCegarLoop]: Counterexample might be feasible
[2021-05-01 01:22:31,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-05-01 01:22:31,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 01:22:31 BoogieIcfgContainer
[2021-05-01 01:22:31,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-05-01 01:22:31,212 INFO L168 Benchmark]: Toolchain (without parser) took 2436.09 ms. Allocated memory is still 182.5 MB. Free memory was 146.8 MB in the beginning and 150.9 MB in the end (delta: -4.1 MB). There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 01:22:31,212 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 182.5 MB. Free memory is still 164.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2021-05-01 01:22:31,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.70 ms. Allocated memory is still 182.5 MB. Free memory was 146.6 MB in the beginning and 136.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2021-05-01 01:22:31,213 INFO L168 Benchmark]: Boogie Preprocessor took 81.01 ms. Allocated memory is still 182.5 MB. Free memory was 136.9 MB in the beginning and 165.8 MB in the end (delta: -28.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
[2021-05-01 01:22:31,213 INFO L168 Benchmark]: RCFGBuilder took 339.17 ms. Allocated memory is still 182.5 MB. Free memory was 165.8 MB in the beginning and 150.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
[2021-05-01 01:22:31,213 INFO L168 Benchmark]: TraceAbstraction took 1765.22 ms. Allocated memory is still 182.5 MB. Free memory was 150.2 MB in the beginning and 150.9 MB in the end (delta: -661.7 kB). Peak memory consumption was 697.4 kB. Max. memory is 8.0 GB.
[2021-05-01 01:22:31,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.11 ms. Allocated memory is still 182.5 MB. Free memory is still 164.4 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 230.70 ms. Allocated memory is still 182.5 MB. Free memory was 146.6 MB in the beginning and 136.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 81.01 ms. Allocated memory is still 182.5 MB. Free memory was 136.9 MB in the beginning and 165.8 MB in the end (delta: -28.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 339.17 ms. Allocated memory is still 182.5 MB. Free memory was 165.8 MB in the beginning and 150.8 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1765.22 ms. Allocated memory is still 182.5 MB. Free memory was 150.2 MB in the beginning and 150.9 MB in the end (delta: -661.7 kB). Peak memory consumption was 697.4 kB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 18]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L22] int counter = 0;
VAL [\old(counter)=16, counter=0]
[L24] unsigned int z, k;
[L25] long long x, y, c;
[L26] z = __VERIFIER_nondet_unsigned_int()
[L27] k = __VERIFIER_nondet_unsigned_int()
[L29] x = 1
[L30] y = z
[L31] c = 1
VAL [\old(counter)=0, c=1, counter=0, x=1, y=0, z=0]
[L33] EXPR counter++
VAL [\old(counter)=0, c=1, counter=1, counter++=0, x=1, y=0, z=0]
[L33] COND TRUE counter++<1
[L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0)
VAL [\old(cond)=1, \old(counter)=0, counter=1]
[L16] COND FALSE !(!(cond))
VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1]
[L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0)
VAL [\old(counter)=0, c=1, counter=1, x=1, y=0, z=0]
[L36] COND TRUE !(c < k)
VAL [\old(counter)=0, c=1, counter=1, k=4294967297, x=1, y=0, z=0]
[L45] x = x * (z - 1)
VAL [\old(counter)=0, c=1, counter=1, k=4294967297, x=4294967295, y=0, z=0]
[L47] CALL __VERIFIER_assert(1 + x - y == 0)
VAL [\old(cond)=0, \old(counter)=0, counter=1]
[L16] COND TRUE !(cond)
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1]
[L18] reach_error()
VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1701.1ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 9.4ms, AutomataDifference: 180.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 57 SDtfs, 13 SDslu, 79 SDs, 0 SdLazy, 41 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.1ms SsaConstructionTime, 101.9ms SatisfiabilityAnalysisTime, 335.8ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 2 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 proved your program to be incorrect!
Received shutdown request...