/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound20.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.2-dev-05ce600
[2022-02-23 17:22:57,723 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-02-23 17:22:57,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-02-23 17:22:57,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-02-23 17:22:57,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-02-23 17:22:57,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-02-23 17:22:57,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-02-23 17:22:57,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-02-23 17:22:57,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-02-23 17:22:57,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-02-23 17:22:57,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-02-23 17:22:57,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-02-23 17:22:57,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-02-23 17:22:57,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-02-23 17:22:57,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-02-23 17:22:57,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-02-23 17:22:57,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-02-23 17:22:57,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-02-23 17:22:57,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-02-23 17:22:57,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-02-23 17:22:57,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-02-23 17:22:57,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-02-23 17:22:57,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-02-23 17:22:57,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-02-23 17:22:57,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-02-23 17:22:57,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-02-23 17:22:57,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-02-23 17:22:57,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-02-23 17:22:57,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-02-23 17:22:57,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-02-23 17:22:57,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-02-23 17:22:57,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-02-23 17:22:57,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-02-23 17:22:57,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-02-23 17:22:57,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-02-23 17:22:57,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-02-23 17:22:57,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-02-23 17:22:57,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-02-23 17:22:57,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-02-23 17:22:57,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-02-23 17:22:57,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-02-23 17:22:57,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf
[2022-02-23 17:22:57,815 INFO L113 SettingsManager]: Loading preferences was successful
[2022-02-23 17:22:57,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-23 17:22:57,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-23 17:22:57,817 INFO L138 SettingsManager]: * sizeof long=4
[2022-02-23 17:22:57,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-02-23 17:22:57,817 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-02-23 17:22:57,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-02-23 17:22:57,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-02-23 17:22:57,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-23 17:22:57,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-02-23 17:22:57,818 INFO L138 SettingsManager]: * sizeof long double=12
[2022-02-23 17:22:57,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-02-23 17:22:57,818 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-02-23 17:22:57,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-02-23 17:22:57,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-23 17:22:57,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-02-23 17:22:57,818 INFO L138 SettingsManager]: * To the following directory=./dump/
[2022-02-23 17:22:57,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-02-23 17:22:57,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-23 17:22:57,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-23 17:22:57,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-02-23 17:22:57,819 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2022-02-23 17:22:57,819 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN;
[2022-02-23 17:22:58,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-23 17:22:58,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-23 17:22:58,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-23 17:22:58,043 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-02-23 17:22:58,043 INFO L275 PluginConnector]: CDTParser initialized
[2022-02-23 17:22:58,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound20.c
[2022-02-23 17:22:58,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03577d4be/b15aa7832f59451c8e3e46cfc973972e/FLAGa7964e447
[2022-02-23 17:22:58,462 INFO L306 CDTParser]: Found 1 translation units.
[2022-02-23 17:22:58,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound20.c
[2022-02-23 17:22:58,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03577d4be/b15aa7832f59451c8e3e46cfc973972e/FLAGa7964e447
[2022-02-23 17:22:58,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03577d4be/b15aa7832f59451c8e3e46cfc973972e
[2022-02-23 17:22:58,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-23 17:22:58,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2022-02-23 17:22:58,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-02-23 17:22:58,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-02-23 17:22:58,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-02-23 17:22:58,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:22:58" (1/1) ...
[2022-02-23 17:22:58,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45488e92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:58, skipping insertion in model container
[2022-02-23 17:22:58,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:22:58" (1/1) ...
[2022-02-23 17:22:58,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-02-23 17:22:58,924 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-02-23 17:22:59,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601]
[2022-02-23 17:22:59,064 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-23 17:22:59,069 INFO L203 MainTranslator]: Completed pre-run
[2022-02-23 17:22:59,076 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound20.c[588,601]
[2022-02-23 17:22:59,082 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-02-23 17:22:59,090 INFO L208 MainTranslator]: Completed translation
[2022-02-23 17:22:59,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59 WrapperNode
[2022-02-23 17:22:59,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-02-23 17:22:59,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-23 17:22:59,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-23 17:22:59,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-02-23 17:22:59,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-23 17:22:59,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-23 17:22:59,110 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-02-23 17:22:59,110 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-02-23 17:22:59,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-23 17:22:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:22:59,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-02-23 17:22:59,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-02-23 17:22:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2022-02-23 17:22:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-23 17:22:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2022-02-23 17:22:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2022-02-23 17:22:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-02-23 17:22:59,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2022-02-23 17:22:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2022-02-23 17:22:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2022-02-23 17:22:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2022-02-23 17:22:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-02-23 17:22:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort
[2022-02-23 17:22:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2022-02-23 17:22:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-02-23 17:22:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2022-02-23 17:22:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2022-02-23 17:22:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-02-23 17:22:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-23 17:22:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-02-23 17:22:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-02-23 17:22:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-02-23 17:22:59,256 INFO L234 CfgBuilder]: Building ICFG
[2022-02-23 17:22:59,257 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-23 17:22:59,410 INFO L275 CfgBuilder]: Performing block encoding
[2022-02-23 17:22:59,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-23 17:22:59,414 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2022-02-23 17:22:59,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:22:59 BoogieIcfgContainer
[2022-02-23 17:22:59,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-23 17:22:59,422 INFO L113 PluginConnector]: ------------------------IcfgTransformer----------------------------
[2022-02-23 17:22:59,422 INFO L271 PluginConnector]: Initializing IcfgTransformer...
[2022-02-23 17:22:59,423 INFO L275 PluginConnector]: IcfgTransformer initialized
[2022-02-23 17:22:59,440 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:22:59" (1/1) ...
[2022-02-23 17:22:59,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 05:22:59 BasicIcfg
[2022-02-23 17:22:59,453 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer----------------------------
[2022-02-23 17:22:59,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-23 17:22:59,454 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-02-23 17:22:59,456 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-02-23 17:22:59,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:22:58" (1/4) ...
[2022-02-23 17:22:59,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44217de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:22:59, skipping insertion in model container
[2022-02-23 17:22:59,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:22:59" (2/4) ...
[2022-02-23 17:22:59,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44217de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:22:59, skipping insertion in model container
[2022-02-23 17:22:59,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:22:59" (3/4) ...
[2022-02-23 17:22:59,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44217de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:22:59, skipping insertion in model container
[2022-02-23 17:22:59,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 05:22:59" (4/4) ...
[2022-02-23 17:22:59,458 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound20.cJordan
[2022-02-23 17:22:59,461 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION
[2022-02-23 17:22:59,461 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-23 17:22:59,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-23 17:22:59,494 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2022-02-23 17:22:59,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-02-23 17:22:59,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14)
[2022-02-23 17:22:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-23 17:22:59,507 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:22:59,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:22:59,508 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:22:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:22:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1231486971, now seen corresponding path program 1 times
[2022-02-23 17:22:59,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:22:59,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994900385]
[2022-02-23 17:22:59,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:22:59,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:22:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:22:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 17:22:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:22:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-23 17:22:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:22:59,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 17:22:59,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:22:59,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994900385]
[2022-02-23 17:22:59,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994900385] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 17:22:59,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 17:22:59,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-23 17:22:59,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133045600]
[2022-02-23 17:22:59,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 17:22:59,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-23 17:22:59,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:22:59,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-23 17:22:59,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-23 17:22:59,665 INFO L87 Difference]: Start difference. First operand has 36 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-23 17:22:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:22:59,723 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions.
[2022-02-23 17:22:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-02-23 17:22:59,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2022-02-23 17:22:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:22:59,733 INFO L225 Difference]: With dead ends: 36
[2022-02-23 17:22:59,733 INFO L226 Difference]: Without dead ends: 31
[2022-02-23 17:22:59,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-23 17:22:59,742 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 17:22:59,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 17:22:59,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2022-02-23 17:22:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2022-02-23 17:22:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-02-23 17:22:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions.
[2022-02-23 17:22:59,766 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 17
[2022-02-23 17:22:59,766 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:22:59,767 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions.
[2022-02-23 17:22:59,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-23 17:22:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions.
[2022-02-23 17:22:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2022-02-23 17:22:59,767 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:22:59,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:22:59,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-23 17:22:59,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:22:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:22:59,768 INFO L85 PathProgramCache]: Analyzing trace with hash -574090659, now seen corresponding path program 1 times
[2022-02-23 17:22:59,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:22:59,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611335146]
[2022-02-23 17:22:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:22:59,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:22:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:22:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2022-02-23 17:22:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:22:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2022-02-23 17:22:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:22:59,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 17:22:59,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:22:59,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611335146]
[2022-02-23 17:22:59,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611335146] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 17:22:59,892 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 17:22:59,892 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-02-23 17:22:59,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444910113]
[2022-02-23 17:22:59,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 17:22:59,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-02-23 17:22:59,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:22:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-02-23 17:22:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-02-23 17:22:59,894 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-23 17:23:00,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:00,042 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions.
[2022-02-23 17:23:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-23 17:23:00,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17
[2022-02-23 17:23:00,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:00,043 INFO L225 Difference]: With dead ends: 35
[2022-02-23 17:23:00,043 INFO L226 Difference]: Without dead ends: 35
[2022-02-23 17:23:00,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2022-02-23 17:23:00,044 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:00,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 43 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 17:23:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2022-02-23 17:23:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2022-02-23 17:23:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12)
[2022-02-23 17:23:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions.
[2022-02-23 17:23:00,070 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 17
[2022-02-23 17:23:00,070 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:00,072 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions.
[2022-02-23 17:23:00,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)
[2022-02-23 17:23:00,073 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions.
[2022-02-23 17:23:00,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2022-02-23 17:23:00,073 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:00,073 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:00,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-23 17:23:00,074 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:00,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash 344526146, now seen corresponding path program 1 times
[2022-02-23 17:23:00,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:00,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983956392]
[2022-02-23 17:23:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:00,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:00,090 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:00,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493911309]
[2022-02-23 17:23:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:00,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:00,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:00,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:00,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-02-23 17:23:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:23:00,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-23 17:23:00,150 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:00,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-23 17:23:00,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 17:23:00,260 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:00,260 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983956392]
[2022-02-23 17:23:00,260 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:00,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493911309]
[2022-02-23 17:23:00,263 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493911309] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 17:23:00,264 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 17:23:00,264 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 17:23:00,264 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248211805]
[2022-02-23 17:23:00,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 17:23:00,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 17:23:00,265 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:00,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 17:23:00,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 17:23:00,266 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-23 17:23:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:00,333 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions.
[2022-02-23 17:23:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-23 17:23:00,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22
[2022-02-23 17:23:00,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:00,334 INFO L225 Difference]: With dead ends: 52
[2022-02-23 17:23:00,335 INFO L226 Difference]: Without dead ends: 52
[2022-02-23 17:23:00,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 17:23:00,336 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:00,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 168 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 17:23:00,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2022-02-23 17:23:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42.
[2022-02-23 17:23:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14)
[2022-02-23 17:23:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions.
[2022-02-23 17:23:00,341 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 22
[2022-02-23 17:23:00,341 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:00,341 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions.
[2022-02-23 17:23:00,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3)
[2022-02-23 17:23:00,342 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions.
[2022-02-23 17:23:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2022-02-23 17:23:00,342 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:00,342 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:00,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-02-23 17:23:00,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:00,557 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:00,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:00,558 INFO L85 PathProgramCache]: Analyzing trace with hash 942277242, now seen corresponding path program 1 times
[2022-02-23 17:23:00,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:00,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496487782]
[2022-02-23 17:23:00,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:00,567 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:00,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619088557]
[2022-02-23 17:23:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:00,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:00,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-02-23 17:23:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:23:00,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-02-23 17:23:00,602 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2022-02-23 17:23:00,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 17:23:00,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:00,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496487782]
[2022-02-23 17:23:00,664 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:00,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619088557]
[2022-02-23 17:23:00,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619088557] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 17:23:00,665 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 17:23:00,665 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 17:23:00,665 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752886947]
[2022-02-23 17:23:00,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 17:23:00,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 17:23:00,665 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 17:23:00,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 17:23:00,666 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-02-23 17:23:00,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:00,699 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions.
[2022-02-23 17:23:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-23 17:23:00,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27
[2022-02-23 17:23:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:00,700 INFO L225 Difference]: With dead ends: 56
[2022-02-23 17:23:00,700 INFO L226 Difference]: Without dead ends: 56
[2022-02-23 17:23:00,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 17:23:00,701 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:00,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 165 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 17:23:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2022-02-23 17:23:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52.
[2022-02-23 17:23:00,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19)
[2022-02-23 17:23:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions.
[2022-02-23 17:23:00,706 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 27
[2022-02-23 17:23:00,706 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:00,707 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions.
[2022-02-23 17:23:00,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)
[2022-02-23 17:23:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions.
[2022-02-23 17:23:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2022-02-23 17:23:00,707 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:00,708 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:00,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-02-23 17:23:00,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-02-23 17:23:00,932 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:00,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:00,932 INFO L85 PathProgramCache]: Analyzing trace with hash -881201762, now seen corresponding path program 1 times
[2022-02-23 17:23:00,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:00,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092973221]
[2022-02-23 17:23:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:00,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:00,940 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:00,941 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089617632]
[2022-02-23 17:23:00,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:00,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:00,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:00,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:00,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-02-23 17:23:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:23:01,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-02-23 17:23:01,052 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2022-02-23 17:23:01,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-02-23 17:23:01,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:01,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092973221]
[2022-02-23 17:23:01,189 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:01,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089617632]
[2022-02-23 17:23:01,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089617632] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-23 17:23:01,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-23 17:23:01,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-02-23 17:23:01,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065506767]
[2022-02-23 17:23:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-23 17:23:01,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-02-23 17:23:01,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-02-23 17:23:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-02-23 17:23:01,190 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-02-23 17:23:01,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:01,238 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions.
[2022-02-23 17:23:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-02-23 17:23:01,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32
[2022-02-23 17:23:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:01,240 INFO L225 Difference]: With dead ends: 64
[2022-02-23 17:23:01,240 INFO L226 Difference]: Without dead ends: 54
[2022-02-23 17:23:01,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-02-23 17:23:01,241 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:01,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 157 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-02-23 17:23:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2022-02-23 17:23:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2022-02-23 17:23:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-02-23 17:23:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions.
[2022-02-23 17:23:01,252 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 32
[2022-02-23 17:23:01,252 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:01,252 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions.
[2022-02-23 17:23:01,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)
[2022-02-23 17:23:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions.
[2022-02-23 17:23:01,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2022-02-23 17:23:01,253 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:01,254 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:01,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-02-23 17:23:01,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:01,467 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:01,468 INFO L85 PathProgramCache]: Analyzing trace with hash 72164327, now seen corresponding path program 1 times
[2022-02-23 17:23:01,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:01,468 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045235350]
[2022-02-23 17:23:01,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:01,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:01,479 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:01,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787993436]
[2022-02-23 17:23:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:01,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:01,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:01,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:01,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-02-23 17:23:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:23:01,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-02-23 17:23:01,529 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2022-02-23 17:23:01,672 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2022-02-23 17:23:01,797 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:01,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045235350]
[2022-02-23 17:23:01,797 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:01,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787993436]
[2022-02-23 17:23:01,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787993436] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 17:23:01,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 17:23:01,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2022-02-23 17:23:01,798 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968197754]
[2022-02-23 17:23:01,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:01,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-23 17:23:01,798 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:01,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-23 17:23:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-02-23 17:23:01,799 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14)
[2022-02-23 17:23:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:02,007 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions.
[2022-02-23 17:23:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-23 17:23:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 49
[2022-02-23 17:23:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:02,008 INFO L225 Difference]: With dead ends: 75
[2022-02-23 17:23:02,008 INFO L226 Difference]: Without dead ends: 75
[2022-02-23 17:23:02,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110
[2022-02-23 17:23:02,009 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 9 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:02,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 208 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-23 17:23:02,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2022-02-23 17:23:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 62.
[2022-02-23 17:23:02,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 19 states have call successors, (19), 10 states have call predecessors, (19), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17)
[2022-02-23 17:23:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions.
[2022-02-23 17:23:02,015 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 49
[2022-02-23 17:23:02,015 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:02,015 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions.
[2022-02-23 17:23:02,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14)
[2022-02-23 17:23:02,015 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions.
[2022-02-23 17:23:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2022-02-23 17:23:02,017 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:02,017 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:02,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-02-23 17:23:02,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:02,227 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 655575797, now seen corresponding path program 2 times
[2022-02-23 17:23:02,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:02,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248497647]
[2022-02-23 17:23:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:02,240 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:02,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856339957]
[2022-02-23 17:23:02,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-23 17:23:02,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:02,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:02,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:02,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-02-23 17:23:02,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-23 17:23:02,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 17:23:02,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core
[2022-02-23 17:23:02,296 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-02-23 17:23:02,408 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-02-23 17:23:02,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:02,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248497647]
[2022-02-23 17:23:02,508 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:02,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856339957]
[2022-02-23 17:23:02,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856339957] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 17:23:02,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 17:23:02,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2022-02-23 17:23:02,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170832824]
[2022-02-23 17:23:02,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:02,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-23 17:23:02,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-23 17:23:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2022-02-23 17:23:02,509 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16)
[2022-02-23 17:23:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:02,576 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions.
[2022-02-23 17:23:02,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-02-23 17:23:02,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 54
[2022-02-23 17:23:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:02,577 INFO L225 Difference]: With dead ends: 79
[2022-02-23 17:23:02,578 INFO L226 Difference]: Without dead ends: 79
[2022-02-23 17:23:02,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72
[2022-02-23 17:23:02,578 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:02,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 240 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 17:23:02,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2022-02-23 17:23:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70.
[2022-02-23 17:23:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 37 states have (on average 1.054054054054054) internal successors, (39), 39 states have internal predecessors, (39), 22 states have call successors, (22), 11 states have call predecessors, (22), 10 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20)
[2022-02-23 17:23:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions.
[2022-02-23 17:23:02,582 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 54
[2022-02-23 17:23:02,583 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:02,583 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions.
[2022-02-23 17:23:02,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16)
[2022-02-23 17:23:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions.
[2022-02-23 17:23:02,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2022-02-23 17:23:02,583 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:02,583 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:02,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-02-23 17:23:02,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:02,798 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:02,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1963047427, now seen corresponding path program 3 times
[2022-02-23 17:23:02,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:02,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36732239]
[2022-02-23 17:23:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:02,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:02,806 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:02,806 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878100281]
[2022-02-23 17:23:02,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-23 17:23:02,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:02,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:02,808 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:02,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-02-23 17:23:02,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2022-02-23 17:23:02,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 17:23:02,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-02-23 17:23:02,857 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2022-02-23 17:23:03,078 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2022-02-23 17:23:03,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:03,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36732239]
[2022-02-23 17:23:03,349 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:03,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878100281]
[2022-02-23 17:23:03,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878100281] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 17:23:03,349 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 17:23:03,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2022-02-23 17:23:03,349 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654111695]
[2022-02-23 17:23:03,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:03,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-23 17:23:03,350 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:03,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-23 17:23:03,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-02-23 17:23:03,351 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18)
[2022-02-23 17:23:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:03,549 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions.
[2022-02-23 17:23:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-23 17:23:03,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 59
[2022-02-23 17:23:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:03,550 INFO L225 Difference]: With dead ends: 91
[2022-02-23 17:23:03,550 INFO L226 Difference]: Without dead ends: 85
[2022-02-23 17:23:03,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2022-02-23 17:23:03,551 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:03,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 212 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-23 17:23:03,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2022-02-23 17:23:03,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79.
[2022-02-23 17:23:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 48 states have internal predecessors, (48), 19 states have call successors, (19), 14 states have call predecessors, (19), 13 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17)
[2022-02-23 17:23:03,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions.
[2022-02-23 17:23:03,557 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 59
[2022-02-23 17:23:03,558 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:03,558 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions.
[2022-02-23 17:23:03,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18)
[2022-02-23 17:23:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions.
[2022-02-23 17:23:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2022-02-23 17:23:03,559 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:03,559 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:03,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-02-23 17:23:03,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:03,772 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:03,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:03,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1897273453, now seen corresponding path program 1 times
[2022-02-23 17:23:03,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:03,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266513840]
[2022-02-23 17:23:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:03,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:03,779 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:03,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781413643]
[2022-02-23 17:23:03,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:03,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:03,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:03,781 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:03,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-02-23 17:23:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:23:03,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 18 conjunts are in the unsatisfiable core
[2022-02-23 17:23:03,820 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked.
[2022-02-23 17:23:04,074 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:04,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:04,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266513840]
[2022-02-23 17:23:04,246 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:04,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781413643]
[2022-02-23 17:23:04,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781413643] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 17:23:04,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2022-02-23 17:23:04,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2022-02-23 17:23:04,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569114917]
[2022-02-23 17:23:04,247 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:04,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-02-23 17:23:04,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:04,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-02-23 17:23:04,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90
[2022-02-23 17:23:04,248 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13)
[2022-02-23 17:23:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:04,326 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions.
[2022-02-23 17:23:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-02-23 17:23:04,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 75
[2022-02-23 17:23:04,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:04,327 INFO L225 Difference]: With dead ends: 93
[2022-02-23 17:23:04,327 INFO L226 Difference]: Without dead ends: 93
[2022-02-23 17:23:04,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132
[2022-02-23 17:23:04,328 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:04,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 216 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 17:23:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2022-02-23 17:23:04,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92.
[2022-02-23 17:23:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 53 states have (on average 1.0566037735849056) internal successors, (56), 55 states have internal predecessors, (56), 23 states have call successors, (23), 16 states have call predecessors, (23), 15 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21)
[2022-02-23 17:23:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions.
[2022-02-23 17:23:04,332 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 75
[2022-02-23 17:23:04,332 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:04,332 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions.
[2022-02-23 17:23:04,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13)
[2022-02-23 17:23:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions.
[2022-02-23 17:23:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2022-02-23 17:23:04,333 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:04,333 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:04,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2022-02-23 17:23:04,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:04,549 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:04,550 INFO L85 PathProgramCache]: Analyzing trace with hash -994112719, now seen corresponding path program 1 times
[2022-02-23 17:23:04,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:04,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227483357]
[2022-02-23 17:23:04,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:04,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:04,557 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:04,557 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263395172]
[2022-02-23 17:23:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:04,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:04,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:04,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:04,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-02-23 17:23:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-23 17:23:04,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 35 conjunts are in the unsatisfiable core
[2022-02-23 17:23:04,620 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 79 proven. 12 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked.
[2022-02-23 17:23:05,210 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:13,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:13,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227483357]
[2022-02-23 17:23:13,781 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:13,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263395172]
[2022-02-23 17:23:13,781 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263395172] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 17:23:13,781 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2022-02-23 17:23:13,781 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2022-02-23 17:23:13,781 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223363140]
[2022-02-23 17:23:13,781 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:13,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-02-23 17:23:13,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-02-23 17:23:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420
[2022-02-23 17:23:13,782 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14)
[2022-02-23 17:23:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:14,716 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions.
[2022-02-23 17:23:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-02-23 17:23:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 80
[2022-02-23 17:23:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:14,718 INFO L225 Difference]: With dead ends: 101
[2022-02-23 17:23:14,718 INFO L226 Difference]: Without dead ends: 90
[2022-02-23 17:23:14,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600
[2022-02-23 17:23:14,718 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:14,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 205 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-23 17:23:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2022-02-23 17:23:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90.
[2022-02-23 17:23:14,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 21 states have call successors, (21), 16 states have call predecessors, (21), 15 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-02-23 17:23:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions.
[2022-02-23 17:23:14,722 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 80
[2022-02-23 17:23:14,722 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:14,722 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions.
[2022-02-23 17:23:14,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 6 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14)
[2022-02-23 17:23:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions.
[2022-02-23 17:23:14,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2022-02-23 17:23:14,723 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:14,723 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:14,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2022-02-23 17:23:14,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2022-02-23 17:23:14,931 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1391751782, now seen corresponding path program 4 times
[2022-02-23 17:23:14,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:14,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075178171]
[2022-02-23 17:23:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:14,962 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:14,962 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268192218]
[2022-02-23 17:23:14,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-02-23 17:23:14,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:14,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:15,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2022-02-23 17:23:15,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-02-23 17:23:15,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 17:23:15,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core
[2022-02-23 17:23:15,047 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2022-02-23 17:23:15,272 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2022-02-23 17:23:15,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:15,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075178171]
[2022-02-23 17:23:15,441 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:15,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268192218]
[2022-02-23 17:23:15,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268192218] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 17:23:15,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 17:23:15,442 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10
[2022-02-23 17:23:15,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591252363]
[2022-02-23 17:23:15,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:15,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-02-23 17:23:15,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:15,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-02-23 17:23:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2022-02-23 17:23:15,444 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26)
[2022-02-23 17:23:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:15,771 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions.
[2022-02-23 17:23:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-02-23 17:23:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 81
[2022-02-23 17:23:15,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:15,772 INFO L225 Difference]: With dead ends: 104
[2022-02-23 17:23:15,772 INFO L226 Difference]: Without dead ends: 104
[2022-02-23 17:23:15,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182
[2022-02-23 17:23:15,773 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:15,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 195 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-02-23 17:23:15,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2022-02-23 17:23:15,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94.
[2022-02-23 17:23:15,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2022-02-23 17:23:15,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions.
[2022-02-23 17:23:15,777 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 81
[2022-02-23 17:23:15,777 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:15,778 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions.
[2022-02-23 17:23:15,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 7 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26)
[2022-02-23 17:23:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions.
[2022-02-23 17:23:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2022-02-23 17:23:15,778 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:15,779 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:15,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2022-02-23 17:23:15,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:15,987 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:15,988 INFO L85 PathProgramCache]: Analyzing trace with hash 574631438, now seen corresponding path program 2 times
[2022-02-23 17:23:15,988 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:15,988 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792527960]
[2022-02-23 17:23:15,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:15,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:16,001 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:16,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838788033]
[2022-02-23 17:23:16,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-23 17:23:16,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:16,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:16,007 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:16,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2022-02-23 17:23:16,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-23 17:23:16,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 17:23:16,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-02-23 17:23:16,061 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked.
[2022-02-23 17:23:16,396 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:16,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:16,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792527960]
[2022-02-23 17:23:16,550 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:16,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838788033]
[2022-02-23 17:23:16,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838788033] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 17:23:16,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2022-02-23 17:23:16,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2022-02-23 17:23:16,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686355252]
[2022-02-23 17:23:16,550 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:16,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-23 17:23:16,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-23 17:23:16,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2022-02-23 17:23:16,551 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18)
[2022-02-23 17:23:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:16,654 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions.
[2022-02-23 17:23:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-02-23 17:23:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 102
[2022-02-23 17:23:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:16,655 INFO L225 Difference]: With dead ends: 116
[2022-02-23 17:23:16,655 INFO L226 Difference]: Without dead ends: 116
[2022-02-23 17:23:16,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2022-02-23 17:23:16,655 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:16,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 290 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 17:23:16,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2022-02-23 17:23:16,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115.
[2022-02-23 17:23:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 67 states have (on average 1.044776119402985) internal successors, (70), 69 states have internal predecessors, (70), 28 states have call successors, (28), 20 states have call predecessors, (28), 19 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26)
[2022-02-23 17:23:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions.
[2022-02-23 17:23:16,659 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 102
[2022-02-23 17:23:16,659 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:16,659 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions.
[2022-02-23 17:23:16,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18)
[2022-02-23 17:23:16,659 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions.
[2022-02-23 17:23:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2022-02-23 17:23:16,660 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:16,660 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:16,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2022-02-23 17:23:16,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2022-02-23 17:23:16,861 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:16,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash 474519958, now seen corresponding path program 2 times
[2022-02-23 17:23:16,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:16,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747964638]
[2022-02-23 17:23:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:16,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:16,867 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:16,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116668549]
[2022-02-23 17:23:16,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-02-23 17:23:16,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:16,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:16,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:16,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2022-02-23 17:23:16,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-02-23 17:23:16,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 17:23:16,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjunts are in the unsatisfiable core
[2022-02-23 17:23:16,916 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked.
[2022-02-23 17:23:17,214 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:17,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:17,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747964638]
[2022-02-23 17:23:17,396 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:17,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116668549]
[2022-02-23 17:23:17,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116668549] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 17:23:17,396 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2022-02-23 17:23:17,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2022-02-23 17:23:17,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771199420]
[2022-02-23 17:23:17,396 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:17,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-02-23 17:23:17,396 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:17,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-02-23 17:23:17,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2022-02-23 17:23:17,397 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19)
[2022-02-23 17:23:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:17,493 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions.
[2022-02-23 17:23:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-02-23 17:23:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 107
[2022-02-23 17:23:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:17,494 INFO L225 Difference]: With dead ends: 124
[2022-02-23 17:23:17,494 INFO L226 Difference]: Without dead ends: 113
[2022-02-23 17:23:17,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2022-02-23 17:23:17,495 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:17,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 299 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-02-23 17:23:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2022-02-23 17:23:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113.
[2022-02-23 17:23:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 26 states have call successors, (26), 20 states have call predecessors, (26), 19 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-02-23 17:23:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions.
[2022-02-23 17:23:17,498 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 107
[2022-02-23 17:23:17,498 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:17,498 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions.
[2022-02-23 17:23:17,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19)
[2022-02-23 17:23:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions.
[2022-02-23 17:23:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-02-23 17:23:17,499 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:17,499 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:17,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2022-02-23 17:23:17,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2022-02-23 17:23:17,700 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash 94155443, now seen corresponding path program 3 times
[2022-02-23 17:23:17,701 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:17,701 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415612392]
[2022-02-23 17:23:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:17,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:17,707 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:17,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219109314]
[2022-02-23 17:23:17,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-23 17:23:17,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:17,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:17,712 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:17,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2022-02-23 17:23:18,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-02-23 17:23:18,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 17:23:18,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 21 conjunts are in the unsatisfiable core
[2022-02-23 17:23:18,046 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:23:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked.
[2022-02-23 17:23:18,467 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:23:18,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:23:18,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415612392]
[2022-02-23 17:23:18,626 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:23:18,627 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219109314]
[2022-02-23 17:23:18,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219109314] provided 0 perfect and 1 imperfect interpolant sequences
[2022-02-23 17:23:18,627 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2022-02-23 17:23:18,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2022-02-23 17:23:18,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953677306]
[2022-02-23 17:23:18,627 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:23:18,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-02-23 17:23:18,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:23:18,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-02-23 17:23:18,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182
[2022-02-23 17:23:18,628 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13)
[2022-02-23 17:23:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:23:18,919 INFO L93 Difference]: Finished difference Result 117 states and 122 transitions.
[2022-02-23 17:23:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-02-23 17:23:18,923 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) Word has length 129
[2022-02-23 17:23:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:23:18,924 INFO L225 Difference]: With dead ends: 117
[2022-02-23 17:23:18,924 INFO L226 Difference]: Without dead ends: 115
[2022-02-23 17:23:18,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306
[2022-02-23 17:23:18,925 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-02-23 17:23:18,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 139 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-02-23 17:23:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2022-02-23 17:23:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115.
[2022-02-23 17:23:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 69 states have internal predecessors, (70), 26 states have call successors, (26), 21 states have call predecessors, (26), 19 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2022-02-23 17:23:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions.
[2022-02-23 17:23:18,927 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 129
[2022-02-23 17:23:18,928 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:23:18,928 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions.
[2022-02-23 17:23:18,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13)
[2022-02-23 17:23:18,928 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions.
[2022-02-23 17:23:18,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2022-02-23 17:23:18,929 INFO L506 BasicCegarLoop]: Found error trace
[2022-02-23 17:23:18,929 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-02-23 17:23:18,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2022-02-23 17:23:19,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2022-02-23 17:23:19,129 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-02-23 17:23:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-02-23 17:23:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1269707793, now seen corresponding path program 3 times
[2022-02-23 17:23:19,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-23 17:23:19,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425933496]
[2022-02-23 17:23:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-23 17:23:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-23 17:23:19,136 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-02-23 17:23:19,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299695844]
[2022-02-23 17:23:19,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-02-23 17:23:19,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-02-23 17:23:19,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-23 17:23:19,138 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-02-23 17:23:19,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2022-02-23 17:23:19,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2022-02-23 17:23:19,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-02-23 17:23:19,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 48 conjunts are in the unsatisfiable core
[2022-02-23 17:23:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-02-23 17:24:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 259 proven. 76 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked.
[2022-02-23 17:24:01,902 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-02-23 17:24:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 204 proven. 34 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked.
[2022-02-23 17:24:12,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-23 17:24:12,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425933496]
[2022-02-23 17:24:12,429 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-02-23 17:24:12,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299695844]
[2022-02-23 17:24:12,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299695844] provided 0 perfect and 2 imperfect interpolant sequences
[2022-02-23 17:24:12,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-02-23 17:24:12,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22
[2022-02-23 17:24:12,430 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259472273]
[2022-02-23 17:24:12,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-02-23 17:24:12,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-02-23 17:24:12,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-23 17:24:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-02-23 17:24:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=369, Unknown=5, NotChecked=0, Total=462
[2022-02-23 17:24:12,431 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 22 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 13 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34)
[2022-02-23 17:24:17,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-02-23 17:24:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-02-23 17:24:26,454 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions.
[2022-02-23 17:24:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2022-02-23 17:24:26,454 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 13 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) Word has length 134
[2022-02-23 17:24:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-02-23 17:24:26,455 INFO L225 Difference]: With dead ends: 117
[2022-02-23 17:24:26,455 INFO L226 Difference]: Without dead ends: 0
[2022-02-23 17:24:26,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 245 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=162, Invalid=645, Unknown=5, NotChecked=0, Total=812
[2022-02-23 17:24:26,456 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 23 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2022-02-23 17:24:26,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 258 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 216 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time]
[2022-02-23 17:24:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-02-23 17:24:26,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-02-23 17:24:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-02-23 17:24:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-02-23 17:24:26,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 134
[2022-02-23 17:24:26,456 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-02-23 17:24:26,456 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-02-23 17:24:26,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 13 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34)
[2022-02-23 17:24:26,457 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-02-23 17:24:26,457 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-02-23 17:24:26,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-02-23 17:24:26,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2022-02-23 17:24:26,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2022-02-23 17:24:26,662 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1, 1, 1, 1]
[2022-02-23 17:24:26,662 INFO L180 ceAbstractionStarter]: Computing trace abstraction results
[2022-02-23 17:24:26,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:24:26 BasicIcfg
[2022-02-23 17:24:26,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-02-23 17:24:26,665 INFO L158 Benchmark]: Toolchain (without parser) took 87770.27ms. Allocated memory was 185.6MB in the beginning and 268.4MB in the end (delta: 82.8MB). Free memory was 134.2MB in the beginning and 178.1MB in the end (delta: -43.9MB). Peak memory consumption was 40.2MB. Max. memory is 8.0GB.
[2022-02-23 17:24:26,665 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 185.6MB. Free memory is still 150.3MB. There was no memory consumed. Max. memory is 8.0GB.
[2022-02-23 17:24:26,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.84ms. Allocated memory is still 185.6MB. Free memory was 134.1MB in the beginning and 158.8MB in the end (delta: -24.7MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB.
[2022-02-23 17:24:26,666 INFO L158 Benchmark]: Boogie Preprocessor took 18.27ms. Allocated memory is still 185.6MB. Free memory was 158.8MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-23 17:24:26,666 INFO L158 Benchmark]: RCFGBuilder took 312.02ms. Allocated memory is still 185.6MB. Free memory was 157.3MB in the beginning and 146.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
[2022-02-23 17:24:26,666 INFO L158 Benchmark]: IcfgTransformer took 30.63ms. Allocated memory is still 185.6MB. Free memory was 146.2MB in the beginning and 145.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
[2022-02-23 17:24:26,666 INFO L158 Benchmark]: TraceAbstraction took 87211.32ms. Allocated memory was 185.6MB in the beginning and 268.4MB in the end (delta: 82.8MB). Free memory was 144.7MB in the beginning and 178.1MB in the end (delta: -33.4MB). Peak memory consumption was 49.6MB. Max. memory is 8.0GB.
[2022-02-23 17:24:26,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.09ms. Allocated memory is still 185.6MB. Free memory is still 150.3MB. There was no memory consumed. Max. memory is 8.0GB.
* CACSL2BoogieTranslator took 192.84ms. Allocated memory is still 185.6MB. Free memory was 134.1MB in the beginning and 158.8MB in the end (delta: -24.7MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB.
* Boogie Preprocessor took 18.27ms. Allocated memory is still 185.6MB. Free memory was 158.8MB in the beginning and 157.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* RCFGBuilder took 312.02ms. Allocated memory is still 185.6MB. Free memory was 157.3MB in the beginning and 146.2MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB.
* IcfgTransformer took 30.63ms. Allocated memory is still 185.6MB. Free memory was 146.2MB in the beginning and 145.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB.
* TraceAbstraction took 87211.32ms. Allocated memory was 185.6MB in the beginning and 268.4MB in the end (delta: 82.8MB). Free memory was 144.7MB in the beginning and 178.1MB in the end (delta: -33.4MB). Peak memory consumption was 49.6MB. Max. memory is 8.0GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 17]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 87.2s, OverallIterations: 15, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 16.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 232 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 2832 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2230 mSDsCounter, 336 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1696 IncrementalHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 336 mSolverCounterUnsat, 602 mSDtfsCounter, 1696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1536 GetRequests, 1370 SyntacticMatches, 11 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 36.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=12, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 54 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 65.9s InterpolantComputationTime, 985 NumberOfCodeBlocks, 796 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1342 ConstructedInterpolants, 0 QuantifiedInterpolants, 5841 SizeOfPredicates, 34 NumberOfNonLiveVariables, 1921 ConjunctsInSsa, 259 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 5633/5874 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2022-02-23 17:24:26,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...