./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/nsqm-if.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version c3fed411
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/nsqm-if.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d7989c0f7330a23b935c06e29a235b3d1d683ab2aa8325b4804307d493787f2
--- Real Ultimate output ---
This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41
[2021-12-17 01:54:09,770 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-12-17 01:54:09,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-17 01:54:09,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-17 01:54:09,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-17 01:54:09,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-17 01:54:09,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-17 01:54:09,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-17 01:54:09,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-17 01:54:09,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-17 01:54:09,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-12-17 01:54:09,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-17 01:54:09,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-17 01:54:09,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-17 01:54:09,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-17 01:54:09,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-17 01:54:09,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-17 01:54:09,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-17 01:54:09,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-17 01:54:09,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-17 01:54:09,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-17 01:54:09,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-17 01:54:09,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-12-17 01:54:09,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-17 01:54:09,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-17 01:54:09,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-17 01:54:09,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-17 01:54:09,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-17 01:54:09,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-17 01:54:09,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-17 01:54:09,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-17 01:54:09,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-17 01:54:09,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-17 01:54:09,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-17 01:54:09,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-17 01:54:09,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-17 01:54:09,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-17 01:54:09,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-17 01:54:09,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-17 01:54:09,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-17 01:54:09,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-12-17 01:54:09,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-12-17 01:54:09,870 INFO L113 SettingsManager]: Loading preferences was successful
[2021-12-17 01:54:09,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-17 01:54:09,874 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-17 01:54:09,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-17 01:54:09,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-17 01:54:09,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-17 01:54:09,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-17 01:54:09,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-12-17 01:54:09,876 INFO L138 SettingsManager]: * Use SBE=true
[2021-12-17 01:54:09,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-17 01:54:09,877 INFO L138 SettingsManager]: * sizeof long=4
[2021-12-17 01:54:09,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-12-17 01:54:09,878 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-12-17 01:54:09,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-12-17 01:54:09,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-12-17 01:54:09,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-17 01:54:09,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-12-17 01:54:09,878 INFO L138 SettingsManager]: * sizeof long double=12
[2021-12-17 01:54:09,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-12-17 01:54:09,879 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-12-17 01:54:09,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-12-17 01:54:09,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-17 01:54:09,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-12-17 01:54:09,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-12-17 01:54:09,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-17 01:54:09,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-17 01:54:09,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-12-17 01:54:09,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-17 01:54:09,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-12-17 01:54:09,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-12-17 01:54:09,880 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-12-17 01:54:09,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-17 01:54:09,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-17 01:54:09,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-12-17 01:54:09,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7989c0f7330a23b935c06e29a235b3d1d683ab2aa8325b4804307d493787f2
[2021-12-17 01:54:10,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-17 01:54:10,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-17 01:54:10,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-17 01:54:10,084 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-12-17 01:54:10,084 INFO L275 PluginConnector]: CDTParser initialized
[2021-12-17 01:54:10,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/nsqm-if.c
[2021-12-17 01:54:10,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d95e7187/d48ddf123d354de896dc298def89046a/FLAGc4527ae54
[2021-12-17 01:54:10,531 INFO L306 CDTParser]: Found 1 translation units.
[2021-12-17 01:54:10,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqm-if.c
[2021-12-17 01:54:10,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d95e7187/d48ddf123d354de896dc298def89046a/FLAGc4527ae54
[2021-12-17 01:54:10,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d95e7187/d48ddf123d354de896dc298def89046a
[2021-12-17 01:54:10,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-17 01:54:10,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-17 01:54:10,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-17 01:54:10,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-17 01:54:10,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-17 01:54:10,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f71887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10, skipping insertion in model container
[2021-12-17 01:54:10,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-12-17 01:54:10,580 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-12-17 01:54:10,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqm-if.c[590,603]
[2021-12-17 01:54:10,730 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-17 01:54:10,735 INFO L203 MainTranslator]: Completed pre-run
[2021-12-17 01:54:10,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqm-if.c[590,603]
[2021-12-17 01:54:10,747 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-17 01:54:10,756 INFO L208 MainTranslator]: Completed translation
[2021-12-17 01:54:10,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10 WrapperNode
[2021-12-17 01:54:10,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-17 01:54:10,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-17 01:54:10,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-17 01:54:10,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-17 01:54:10,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,789 INFO L137 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74
[2021-12-17 01:54:10,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-17 01:54:10,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-17 01:54:10,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-17 01:54:10,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-12-17 01:54:10,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-17 01:54:10,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-17 01:54:10,809 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-12-17 01:54:10,809 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-12-17 01:54:10,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (1/1) ...
[2021-12-17 01:54:10,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-17 01:54:10,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:54:10,837 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)
[2021-12-17 01:54:10,840 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
[2021-12-17 01:54:10,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-17 01:54:10,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-12-17 01:54:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-12-17 01:54:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-12-17 01:54:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-17 01:54:10,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-17 01:54:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-12-17 01:54:10,911 INFO L236 CfgBuilder]: Building ICFG
[2021-12-17 01:54:10,912 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-17 01:54:11,028 INFO L277 CfgBuilder]: Performing block encoding
[2021-12-17 01:54:11,032 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-17 01:54:11,032 INFO L301 CfgBuilder]: Removed 3 assume(true) statements.
[2021-12-17 01:54:11,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:54:11 BoogieIcfgContainer
[2021-12-17 01:54:11,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-17 01:54:11,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-17 01:54:11,035 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-12-17 01:54:11,037 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-12-17 01:54:11,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 01:54:10" (1/3) ...
[2021-12-17 01:54:11,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488fa723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:54:11, skipping insertion in model container
[2021-12-17 01:54:11,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:54:10" (2/3) ...
[2021-12-17 01:54:11,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488fa723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:54:11, skipping insertion in model container
[2021-12-17 01:54:11,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:54:11" (3/3) ...
[2021-12-17 01:54:11,040 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqm-if.c
[2021-12-17 01:54:11,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-17 01:54:11,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-17 01:54:11,089 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-17 01:54:11,111 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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
[2021-12-17 01:54:11,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-17 01:54:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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)
[2021-12-17 01:54:11,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-12-17 01:54:11,126 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:54:11,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:54:11,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:54:11,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:54:11,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times
[2021-12-17 01:54:11,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:54:11,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968923566]
[2021-12-17 01:54:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:11,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:54:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:54:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:54:11,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:54:11,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968923566]
[2021-12-17 01:54:11,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968923566] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 01:54:11,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 01:54:11,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-17 01:54:11,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046888521]
[2021-12-17 01:54:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 01:54:11,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-12-17 01:54:11,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:54:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-12-17 01:54:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-12-17 01:54:11,336 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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)
[2021-12-17 01:54:11,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:54:11,349 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions.
[2021-12-17 01:54:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-12-17 01:54:11,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) Word has length 12
[2021-12-17 01:54:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:54:11,356 INFO L225 Difference]: With dead ends: 42
[2021-12-17 01:54:11,357 INFO L226 Difference]: Without dead ends: 19
[2021-12-17 01:54:11,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-12-17 01:54:11,365 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-17 01:54:11,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 01:54:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-12-17 01:54:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2021-12-17 01:54:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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)
[2021-12-17 01:54:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions.
[2021-12-17 01:54:11,392 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12
[2021-12-17 01:54:11,392 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:54:11,392 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions.
[2021-12-17 01:54:11,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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)
[2021-12-17 01:54:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions.
[2021-12-17 01:54:11,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-12-17 01:54:11,393 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:54:11,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:54:11,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-12-17 01:54:11,394 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:54:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:54:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times
[2021-12-17 01:54:11,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:54:11,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055922779]
[2021-12-17 01:54:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:11,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:54:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:54:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:54:11,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:54:11,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055922779]
[2021-12-17 01:54:11,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055922779] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 01:54:11,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 01:54:11,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-12-17 01:54:11,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381128740]
[2021-12-17 01:54:11,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 01:54:11,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-12-17 01:54:11,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:54:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-12-17 01:54:11,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-17 01:54:11,483 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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)
[2021-12-17 01:54:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:54:11,540 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions.
[2021-12-17 01:54:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-12-17 01:54:11,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) Word has length 12
[2021-12-17 01:54:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:54:11,541 INFO L225 Difference]: With dead ends: 45
[2021-12-17 01:54:11,541 INFO L226 Difference]: Without dead ends: 31
[2021-12-17 01:54:11,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-12-17 01:54:11,543 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-17 01:54:11,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 17 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 01:54:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-12-17 01:54:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23.
[2021-12-17 01:54:11,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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)
[2021-12-17 01:54:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-12-17 01:54:11,548 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12
[2021-12-17 01:54:11,548 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:54:11,548 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-12-17 01:54:11,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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)
[2021-12-17 01:54:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-12-17 01:54:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-12-17 01:54:11,551 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:54:11,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:54:11,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-12-17 01:54:11,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:54:11,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:54:11,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times
[2021-12-17 01:54:11,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:54:11,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394885366]
[2021-12-17 01:54:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:11,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:54:11,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:54:11,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1479396314]
[2021-12-17 01:54:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:11,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:54:11,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:54:11,583 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)
[2021-12-17 01:54:11,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-12-17 01:54:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:54:11,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-12-17 01:54:11,650 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:54:11,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2021-12-17 01:54:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-12-17 01:54:11,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-12-17 01:54:11,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:54:11,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394885366]
[2021-12-17 01:54:11,748 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:54:11,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479396314]
[2021-12-17 01:54:11,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479396314] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 01:54:11,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 01:54:11,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-12-17 01:54:11,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464972742]
[2021-12-17 01:54:11,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 01:54:11,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-12-17 01:54:11,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:54:11,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-12-17 01:54:11,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-12-17 01:54:11,750 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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)
[2021-12-17 01:54:11,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:54:11,801 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions.
[2021-12-17 01:54:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-12-17 01:54:11,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) Word has length 18
[2021-12-17 01:54:11,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:54:11,802 INFO L225 Difference]: With dead ends: 40
[2021-12-17 01:54:11,802 INFO L226 Difference]: Without dead ends: 38
[2021-12-17 01:54:11,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-12-17 01:54:11,803 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-17 01:54:11,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 53 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 01:54:11,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2021-12-17 01:54:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28.
[2021-12-17 01:54:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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)
[2021-12-17 01:54:11,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions.
[2021-12-17 01:54:11,808 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18
[2021-12-17 01:54:11,808 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:54:11,808 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions.
[2021-12-17 01:54:11,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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)
[2021-12-17 01:54:11,809 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions.
[2021-12-17 01:54:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-12-17 01:54:11,809 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:54:11,809 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:54:11,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-12-17 01:54:12,019 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
[2021-12-17 01:54:12,020 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:54:12,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:54:12,020 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times
[2021-12-17 01:54:12,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:54:12,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636467068]
[2021-12-17 01:54:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:12,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:54:12,062 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:54:12,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073950249]
[2021-12-17 01:54:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:12,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:54:12,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:54:12,064 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)
[2021-12-17 01:54:12,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-12-17 01:54:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:54:12,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-12-17 01:54:12,103 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:54:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:54:12,168 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:54:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:54:12,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:54:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636467068]
[2021-12-17 01:54:12,214 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:54:12,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073950249]
[2021-12-17 01:54:12,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073950249] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:54:12,215 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:54:12,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9
[2021-12-17 01:54:12,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314513902]
[2021-12-17 01:54:12,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:54:12,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-12-17 01:54:12,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:54:12,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-12-17 01:54:12,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2021-12-17 01:54:12,217 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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)
[2021-12-17 01:54:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:54:12,313 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions.
[2021-12-17 01:54:12,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-12-17 01:54:12,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) Word has length 21
[2021-12-17 01:54:12,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:54:12,315 INFO L225 Difference]: With dead ends: 70
[2021-12-17 01:54:12,316 INFO L226 Difference]: Without dead ends: 43
[2021-12-17 01:54:12,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132
[2021-12-17 01:54:12,317 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 01:54:12,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 44 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-17 01:54:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2021-12-17 01:54:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27.
[2021-12-17 01:54:12,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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)
[2021-12-17 01:54:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions.
[2021-12-17 01:54:12,320 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21
[2021-12-17 01:54:12,321 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:54:12,321 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions.
[2021-12-17 01:54:12,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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)
[2021-12-17 01:54:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions.
[2021-12-17 01:54:12,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-12-17 01:54:12,321 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:54:12,322 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:54:12,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-12-17 01:54:12,554 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
[2021-12-17 01:54:12,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:54:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:54:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times
[2021-12-17 01:54:12,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:54:12,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731147389]
[2021-12-17 01:54:12,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:12,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:54:12,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:54:12,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737443104]
[2021-12-17 01:54:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:12,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:54:12,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:54:12,572 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)
[2021-12-17 01:54:12,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-12-17 01:54:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:54:12,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core
[2021-12-17 01:54:12,635 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:54:12,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2021-12-17 01:54:12,757 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:54:12,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22
[2021-12-17 01:54:12,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-12-17 01:54:12,818 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:54:13,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23
[2021-12-17 01:54:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2021-12-17 01:54:13,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:54:13,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731147389]
[2021-12-17 01:54:13,050 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:54:13,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737443104]
[2021-12-17 01:54:13,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737443104] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:54:13,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:54:13,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2021-12-17 01:54:13,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679441063]
[2021-12-17 01:54:13,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:54:13,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-12-17 01:54:13,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:54:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-12-17 01:54:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156
[2021-12-17 01:54:13,052 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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)
[2021-12-17 01:54:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:54:13,160 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions.
[2021-12-17 01:54:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-12-17 01:54:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) Word has length 24
[2021-12-17 01:54:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:54:13,161 INFO L225 Difference]: With dead ends: 50
[2021-12-17 01:54:13,161 INFO L226 Difference]: Without dead ends: 38
[2021-12-17 01:54:13,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210
[2021-12-17 01:54:13,162 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 01:54:13,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 29 Unchecked, 0.1s Time]
[2021-12-17 01:54:13,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2021-12-17 01:54:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35.
[2021-12-17 01:54:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 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)
[2021-12-17 01:54:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions.
[2021-12-17 01:54:13,166 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 24
[2021-12-17 01:54:13,166 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:54:13,166 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions.
[2021-12-17 01:54:13,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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)
[2021-12-17 01:54:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions.
[2021-12-17 01:54:13,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-12-17 01:54:13,167 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:54:13,167 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:54:13,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-12-17 01:54:13,375 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
[2021-12-17 01:54:13,376 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:54:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:54:13,376 INFO L85 PathProgramCache]: Analyzing trace with hash -672376363, now seen corresponding path program 2 times
[2021-12-17 01:54:13,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:54:13,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385216426]
[2021-12-17 01:54:13,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:13,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:54:13,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:54:13,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539008181]
[2021-12-17 01:54:13,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-12-17 01:54:13,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:54:13,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:54:13,409 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)
[2021-12-17 01:54:13,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-12-17 01:54:13,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-12-17 01:54:13,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 01:54:13,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-12-17 01:54:13,452 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:54:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:54:13,551 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:54:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:54:13,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:54:13,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385216426]
[2021-12-17 01:54:13,621 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:54:13,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539008181]
[2021-12-17 01:54:13,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539008181] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:54:13,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:54:13,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12
[2021-12-17 01:54:13,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060760322]
[2021-12-17 01:54:13,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:54:13,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-12-17 01:54:13,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:54:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-12-17 01:54:13,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2021-12-17 01:54:13,624 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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)
[2021-12-17 01:54:13,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:54:13,762 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions.
[2021-12-17 01:54:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-12-17 01:54:13,763 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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) Word has length 27
[2021-12-17 01:54:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:54:13,768 INFO L225 Difference]: With dead ends: 98
[2021-12-17 01:54:13,768 INFO L226 Difference]: Without dead ends: 83
[2021-12-17 01:54:13,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240
[2021-12-17 01:54:13,771 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 01:54:13,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 66 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-17 01:54:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2021-12-17 01:54:13,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56.
[2021-12-17 01:54:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 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)
[2021-12-17 01:54:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions.
[2021-12-17 01:54:13,788 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 27
[2021-12-17 01:54:13,789 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:54:13,789 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions.
[2021-12-17 01:54:13,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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)
[2021-12-17 01:54:13,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions.
[2021-12-17 01:54:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-12-17 01:54:13,790 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:54:13,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:54:13,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-12-17 01:54:14,007 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
[2021-12-17 01:54:14,007 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:54:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:54:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times
[2021-12-17 01:54:14,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:54:14,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568287688]
[2021-12-17 01:54:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:14,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:54:14,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:54:14,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063610535]
[2021-12-17 01:54:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:14,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:54:14,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:54:14,023 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)
[2021-12-17 01:54:14,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-12-17 01:54:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:54:14,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 37 conjunts are in the unsatisfiable core
[2021-12-17 01:54:14,096 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:54:14,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-12-17 01:54:14,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-12-17 01:54:14,203 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:54:14,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20
[2021-12-17 01:54:14,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20
[2021-12-17 01:54:14,331 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size
[2021-12-17 01:54:14,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 35
[2021-12-17 01:54:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:54:14,540 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:54:48,818 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (and (or (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_142 Int) (~N~0 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8)) v_ArrVal_142)))) (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |ULTIMATE.start_main_~a~0#1.offset| (+ ~N~0 1)))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) (< 2147483647 .cse1)) (or (<= .cse1 2147483647) (forall ((|ULTIMATE.start_main_~a~0#1.offset| Int) (v_ArrVal_142 Int) (~N~0 Int)) (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ |c_ULTIMATE.start_main_~b~0#1.offset| (* (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 8) (- 34359738368)) v_ArrVal_142)))) (store .cse2 |c_ULTIMATE.start_main_~a~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|) |ULTIMATE.start_main_~a~0#1.offset| (+ ~N~0 1)))) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1))))) is different from false
[2021-12-17 01:54:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 2 times theorem prover too weak. 0 trivial. 1 not checked.
[2021-12-17 01:54:52,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:54:52,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568287688]
[2021-12-17 01:54:52,416 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:54:52,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063610535]
[2021-12-17 01:54:52,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063610535] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:54:52,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:54:52,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22
[2021-12-17 01:54:52,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21698230]
[2021-12-17 01:54:52,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:54:52,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2021-12-17 01:54:52,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:54:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-12-17 01:54:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=326, Unknown=22, NotChecked=38, Total=462
[2021-12-17 01:54:52,418 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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)
[2021-12-17 01:54:52,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:54:52,661 INFO L93 Difference]: Finished difference Result 126 states and 149 transitions.
[2021-12-17 01:54:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2021-12-17 01:54:52,662 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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) Word has length 28
[2021-12-17 01:54:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:54:52,662 INFO L225 Difference]: With dead ends: 126
[2021-12-17 01:54:52,662 INFO L226 Difference]: Without dead ends: 62
[2021-12-17 01:54:52,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=93, Invalid=395, Unknown=22, NotChecked=42, Total=552
[2021-12-17 01:54:52,663 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 01:54:52,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 92 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 125 Invalid, 0 Unknown, 102 Unchecked, 0.1s Time]
[2021-12-17 01:54:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2021-12-17 01:54:52,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62.
[2021-12-17 01:54:52,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 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)
[2021-12-17 01:54:52,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions.
[2021-12-17 01:54:52,667 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 28
[2021-12-17 01:54:52,667 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:54:52,667 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions.
[2021-12-17 01:54:52,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 states have internal predecessors, (50), 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)
[2021-12-17 01:54:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions.
[2021-12-17 01:54:52,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-12-17 01:54:52,668 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:54:52,668 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:54:52,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-12-17 01:54:52,884 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
[2021-12-17 01:54:52,885 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:54:52,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:54:52,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1487245307, now seen corresponding path program 3 times
[2021-12-17 01:54:52,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:54:52,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542823748]
[2021-12-17 01:54:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:54:52,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:54:52,901 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:54:52,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243548293]
[2021-12-17 01:54:52,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-12-17 01:54:52,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:54:52,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:54:52,906 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)
[2021-12-17 01:54:52,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-12-17 01:54:53,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-12-17 01:54:53,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 01:54:53,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 34 conjunts are in the unsatisfiable core
[2021-12-17 01:54:53,150 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:54:53,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2021-12-17 01:54:53,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51
[2021-12-17 01:54:53,412 INFO L354 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size
[2021-12-17 01:54:53,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 62
[2021-12-17 01:54:53,447 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size
[2021-12-17 01:54:53,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26
[2021-12-17 01:54:53,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51
[2021-12-17 01:54:53,557 INFO L354 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size
[2021-12-17 01:54:53,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 62
[2021-12-17 01:54:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:54:53,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17
[2021-12-17 01:54:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-12-17 01:54:53,690 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:54:54,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34
[2021-12-17 01:54:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-12-17 01:54:54,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:54:54,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542823748]
[2021-12-17 01:54:54,212 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:54:54,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243548293]
[2021-12-17 01:54:54,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243548293] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:54:54,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:54:54,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24
[2021-12-17 01:54:54,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859011786]
[2021-12-17 01:54:54,212 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:54:54,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2021-12-17 01:54:54,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:54:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2021-12-17 01:54:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552
[2021-12-17 01:54:54,213 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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)
[2021-12-17 01:55:31,138 WARN L227 SmtUtils]: Spent 35.84s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-12-17 01:55:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:55:31,204 INFO L93 Difference]: Finished difference Result 155 states and 183 transitions.
[2021-12-17 01:55:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-12-17 01:55:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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) Word has length 30
[2021-12-17 01:55:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:55:31,205 INFO L225 Difference]: With dead ends: 155
[2021-12-17 01:55:31,205 INFO L226 Difference]: Without dead ends: 133
[2021-12-17 01:55:31,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 37.1s TimeCoverageRelationStatistics Valid=616, Invalid=2140, Unknown=0, NotChecked=0, Total=2756
[2021-12-17 01:55:31,206 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 182 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 257 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2021-12-17 01:55:31,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 155 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 293 Invalid, 0 Unknown, 257 Unchecked, 0.3s Time]
[2021-12-17 01:55:31,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2021-12-17 01:55:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 82.
[2021-12-17 01:55:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 81 states have internal predecessors, (101), 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)
[2021-12-17 01:55:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 101 transitions.
[2021-12-17 01:55:31,211 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 101 transitions. Word has length 30
[2021-12-17 01:55:31,211 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:55:31,211 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 101 transitions.
[2021-12-17 01:55:31,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 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)
[2021-12-17 01:55:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 101 transitions.
[2021-12-17 01:55:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2021-12-17 01:55:31,212 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:55:31,212 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:55:31,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-12-17 01:55:31,415 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
[2021-12-17 01:55:31,416 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:55:31,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:55:31,416 INFO L85 PathProgramCache]: Analyzing trace with hash 939270440, now seen corresponding path program 2 times
[2021-12-17 01:55:31,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:55:31,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607156643]
[2021-12-17 01:55:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:55:31,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:55:31,431 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:55:31,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013952906]
[2021-12-17 01:55:31,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-12-17 01:55:31,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:55:31,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:55:31,433 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)
[2021-12-17 01:55:31,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-12-17 01:55:31,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-12-17 01:55:31,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 01:55:31,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-12-17 01:55:31,479 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:55:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-12-17 01:55:31,562 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:55:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-12-17 01:55:31,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:55:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607156643]
[2021-12-17 01:55:31,629 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:55:31,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013952906]
[2021-12-17 01:55:31,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013952906] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:55:31,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:55:31,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12
[2021-12-17 01:55:31,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061126660]
[2021-12-17 01:55:31,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:55:31,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2021-12-17 01:55:31,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:55:31,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-12-17 01:55:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132
[2021-12-17 01:55:31,631 INFO L87 Difference]: Start difference. First operand 82 states and 101 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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)
[2021-12-17 01:55:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:55:31,780 INFO L93 Difference]: Finished difference Result 142 states and 173 transitions.
[2021-12-17 01:55:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-12-17 01:55:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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) Word has length 31
[2021-12-17 01:55:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:55:31,781 INFO L225 Difference]: With dead ends: 142
[2021-12-17 01:55:31,781 INFO L226 Difference]: Without dead ends: 67
[2021-12-17 01:55:31,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342
[2021-12-17 01:55:31,782 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 145 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 01:55:31,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 55 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-17 01:55:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2021-12-17 01:55:31,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48.
[2021-12-17 01:55:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 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)
[2021-12-17 01:55:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions.
[2021-12-17 01:55:31,791 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 31
[2021-12-17 01:55:31,791 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:55:31,791 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions.
[2021-12-17 01:55:31,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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)
[2021-12-17 01:55:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions.
[2021-12-17 01:55:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-12-17 01:55:31,793 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:55:31,793 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:55:31,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-12-17 01:55:32,007 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
[2021-12-17 01:55:32,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:55:32,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:55:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708229, now seen corresponding path program 3 times
[2021-12-17 01:55:32,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:55:32,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612423899]
[2021-12-17 01:55:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:55:32,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:55:32,027 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:55:32,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542584382]
[2021-12-17 01:55:32,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-12-17 01:55:32,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:55:32,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:55:32,032 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)
[2021-12-17 01:55:32,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-12-17 01:55:32,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-12-17 01:55:32,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 01:55:32,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 62 conjunts are in the unsatisfiable core
[2021-12-17 01:55:32,225 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:55:32,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-12-17 01:55:32,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-12-17 01:55:32,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49
[2021-12-17 01:55:32,447 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,448 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,449 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60
[2021-12-17 01:55:32,457 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17
[2021-12-17 01:55:32,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49
[2021-12-17 01:55:32,589 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,590 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,590 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 60
[2021-12-17 01:55:32,604 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 15
[2021-12-17 01:55:32,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20
[2021-12-17 01:55:32,854 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size
[2021-12-17 01:55:32,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 129
[2021-12-17 01:55:32,858 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 01:55:32,859 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,860 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,860 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,861 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,862 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,862 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 157
[2021-12-17 01:55:32,897 WARN L234 Elim1Store]: Array PQE input equivalent to false
[2021-12-17 01:55:32,933 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,934 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,935 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:32,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 76
[2021-12-17 01:55:33,081 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2021-12-17 01:55:33,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 77
[2021-12-17 01:55:33,087 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,087 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,089 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,092 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,110 INFO L354 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size
[2021-12-17 01:55:33,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 102
[2021-12-17 01:55:33,145 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,146 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,147 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33
[2021-12-17 01:55:33,183 WARN L234 Elim1Store]: Array PQE input equivalent to false
[2021-12-17 01:55:33,220 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,221 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,221 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 38
[2021-12-17 01:55:33,230 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,231 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,232 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:55:33,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 53
[2021-12-17 01:55:33,669 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-12-17 01:55:33,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 40
[2021-12-17 01:55:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:55:33,684 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:56:04,815 INFO L354 Elim1Store]: treesize reduction 134, result has 23.4 percent of original size
[2021-12-17 01:56:04,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1356 treesize of output 916
[2021-12-17 01:56:04,832 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2021-12-17 01:56:04,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 956 treesize of output 914
[2021-12-17 01:56:04,853 INFO L354 Elim1Store]: treesize reduction 56, result has 1.8 percent of original size
[2021-12-17 01:56:04,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1022 treesize of output 960
[2021-12-17 01:56:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:56:05,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:56:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612423899]
[2021-12-17 01:56:05,154 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:56:05,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542584382]
[2021-12-17 01:56:05,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542584382] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:56:05,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:56:05,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 42
[2021-12-17 01:56:05,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250733495]
[2021-12-17 01:56:05,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:56:05,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states
[2021-12-17 01:56:05,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-12-17 01:56:05,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2021-12-17 01:56:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1386, Unknown=12, NotChecked=0, Total=1722
[2021-12-17 01:56:05,159 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 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)
[2021-12-17 01:56:50,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:56:50,495 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions.
[2021-12-17 01:56:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2021-12-17 01:56:50,496 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 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) Word has length 34
[2021-12-17 01:56:50,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:56:50,496 INFO L225 Difference]: With dead ends: 99
[2021-12-17 01:56:50,496 INFO L226 Difference]: Without dead ends: 97
[2021-12-17 01:56:50,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 74.8s TimeCoverageRelationStatistics Valid=800, Invalid=3592, Unknown=30, NotChecked=0, Total=4422
[2021-12-17 01:56:50,498 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 71 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 419 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2021-12-17 01:56:50,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 84 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 178 Invalid, 0 Unknown, 419 Unchecked, 0.2s Time]
[2021-12-17 01:56:50,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2021-12-17 01:56:50,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87.
[2021-12-17 01:56:50,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 86 states have internal predecessors, (99), 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)
[2021-12-17 01:56:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions.
[2021-12-17 01:56:50,504 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 34
[2021-12-17 01:56:50,504 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:56:50,504 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions.
[2021-12-17 01:56:50,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 42 states have internal predecessors, (65), 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)
[2021-12-17 01:56:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions.
[2021-12-17 01:56:50,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2021-12-17 01:56:50,505 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:56:50,505 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:56:50,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-12-17 01:56:50,719 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
[2021-12-17 01:56:50,719 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:56:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:56:50,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 4 times
[2021-12-17 01:56:50,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-12-17 01:56:50,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295670787]
[2021-12-17 01:56:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:56:50,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-12-17 01:56:50,743 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2021-12-17 01:56:50,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122024419]
[2021-12-17 01:56:50,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2021-12-17 01:56:50,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-12-17 01:56:50,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:56:50,751 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)
[2021-12-17 01:56:50,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-12-17 01:56:50,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-12-17 01:56:50,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 01:56:50,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 55 conjunts are in the unsatisfiable core
[2021-12-17 01:56:50,942 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:56:50,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8
[2021-12-17 01:56:50,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-12-17 01:56:51,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 97
[2021-12-17 01:56:51,034 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 01:56:51,035 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,035 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,036 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,037 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,037 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,038 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 131
[2021-12-17 01:56:51,048 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,049 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,049 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 87
[2021-12-17 01:56:51,129 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,130 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,131 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34
[2021-12-17 01:56:51,218 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34
[2021-12-17 01:56:51,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 145
[2021-12-17 01:56:51,328 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 01:56:51,329 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,330 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,330 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,331 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,332 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,332 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 160
[2021-12-17 01:56:51,350 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,351 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,352 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39
[2021-12-17 01:56:51,490 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,491 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,491 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,492 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:56:51,492 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 01:56:51,494 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-12-17 01:56:51,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 62
[2021-12-17 01:56:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:56:51,824 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:57:19,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1051022 treesize of output 1030574
[2021-12-17 01:57:21,326 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-12-17 01:57:21,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1246190 treesize of output 1166782
[2021-12-17 01:57:45,927 WARN L227 SmtUtils]: Spent 24.60s on a formula simplification. DAG size of input: 982 DAG size of output: 980 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2021-12-17 01:57:45,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-12-17 01:57:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295670787]
[2021-12-17 01:57:45,935 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2021-12-17 01:57:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122024419]
[2021-12-17 01:57:45,935 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range
[2021-12-17 01:57:45,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences.
[2021-12-17 01:57:45,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0
[2021-12-17 01:57:45,936 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible
[2021-12-17 01:57:45,936 INFO L628 BasicCegarLoop]: Counterexample might be feasible
[2021-12-17 01:57:45,941 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2021-12-17 01:57:45,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-12-17 01:57:46,153 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
[2021-12-17 01:57:46,156 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1]
[2021-12-17 01:57:46,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-12-17 01:57:46,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 01:57:46 BoogieIcfgContainer
[2021-12-17 01:57:46,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-12-17 01:57:46,169 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-12-17 01:57:46,170 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-12-17 01:57:46,170 INFO L275 PluginConnector]: Witness Printer initialized
[2021-12-17 01:57:46,170 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:54:11" (3/4) ...
[2021-12-17 01:57:46,172 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2021-12-17 01:57:46,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-12-17 01:57:46,172 INFO L158 Benchmark]: Toolchain (without parser) took 215618.00ms. Allocated memory was 86.0MB in the beginning and 314.6MB in the end (delta: 228.6MB). Free memory was 51.8MB in the beginning and 109.2MB in the end (delta: -57.3MB). Peak memory consumption was 171.0MB. Max. memory is 16.1GB.
[2021-12-17 01:57:46,173 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 54.9MB in the beginning and 54.9MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-17 01:57:46,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.13ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.7MB in the beginning and 81.3MB in the end (delta: -29.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB.
[2021-12-17 01:57:46,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.38ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 79.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-12-17 01:57:46,173 INFO L158 Benchmark]: Boogie Preprocessor took 18.07ms. Allocated memory is still 104.9MB. Free memory was 79.5MB in the beginning and 78.5MB in the end (delta: 992.8kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2021-12-17 01:57:46,174 INFO L158 Benchmark]: RCFGBuilder took 225.12ms. Allocated memory is still 104.9MB. Free memory was 78.2MB in the beginning and 67.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-12-17 01:57:46,174 INFO L158 Benchmark]: TraceAbstraction took 215134.15ms. Allocated memory was 104.9MB in the beginning and 314.6MB in the end (delta: 209.7MB). Free memory was 67.1MB in the beginning and 109.2MB in the end (delta: -42.1MB). Peak memory consumption was 180.4MB. Max. memory is 16.1GB.
[2021-12-17 01:57:46,174 INFO L158 Benchmark]: Witness Printer took 2.70ms. Allocated memory is still 314.6MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-12-17 01:57:46,175 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 54.9MB in the beginning and 54.9MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 200.13ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 51.7MB in the beginning and 81.3MB in the end (delta: -29.6MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 32.38ms. Allocated memory is still 104.9MB. Free memory was 81.3MB in the beginning and 79.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 18.07ms. Allocated memory is still 104.9MB. Free memory was 79.5MB in the beginning and 78.5MB in the end (delta: 992.8kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* RCFGBuilder took 225.12ms. Allocated memory is still 104.9MB. Free memory was 78.2MB in the beginning and 67.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 215134.15ms. Allocated memory was 104.9MB in the beginning and 314.6MB in the end (delta: 209.7MB). Free memory was 67.1MB in the beginning and 109.2MB in the end (delta: -42.1MB). Peak memory consumption was 180.4MB. Max. memory is 16.1GB.
* Witness Printer took 2.70ms. Allocated memory is still 314.6MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB.
* 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
- UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L19] int N;
[L23] N = __VERIFIER_nondet_int()
[L24] COND FALSE !(N <= 0)
[L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13] COND FALSE !(!cond)
[L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27] long long i;
[L28] long long *a = malloc(sizeof(long long)*N);
[L29] long long *b = malloc(sizeof(long long)*N);
[L31] i=0
[L31] COND TRUE i<N
[L33] COND TRUE i==0
[L34] b[0] = 1
[L31] i++
[L31] COND TRUE i<N
[L33] COND FALSE !(i==0)
[L36] EXPR b[i-1]
[L36] b[i] = b[i-1] + 2
[L31] i++
[L31] COND TRUE i<N
[L33] COND FALSE !(i==0)
[L36] EXPR b[i-1]
[L36] b[i] = b[i-1] + 2
[L31] i++
[L31] COND FALSE !(i<N)
[L40] i=0
[L40] COND TRUE i<N
[L42] COND TRUE i==0
[L43] a[0] = N + 1
[L40] i++
[L40] COND TRUE i<N
[L42] COND FALSE !(i==0)
[L45] EXPR a[i-1]
[L45] EXPR b[i-1]
[L45] a[i] = a[i-1] + b[i-1] + 2
[L40] i++
[L40] COND TRUE i<N
[L42] COND FALSE !(i==0)
[L45] EXPR a[i-1]
[L45] EXPR b[i-1]
[L45] a[i] = a[i-1] + b[i-1] + 2
[L40] i++
[L40] COND FALSE !(i<N)
[L49] i=0
[L49] COND TRUE i<N
[L51] EXPR a[i]
[L51] CALL __VERIFIER_assert(a[i] == N + (i+1)*(i+1))
[L15] COND FALSE !(!(cond))
[L51] RET __VERIFIER_assert(a[i] == N + (i+1)*(i+1))
[L49] i++
[L49] COND TRUE i<N
[L51] EXPR a[i]
[L51] CALL __VERIFIER_assert(a[i] == N + (i+1)*(i+1))
[L15] COND FALSE !(!(cond))
[L51] RET __VERIFIER_assert(a[i] == N + (i+1)*(i+1))
[L49] i++
[L49] COND TRUE i<N
[L51] EXPR a[i]
[L51] CALL __VERIFIER_assert(a[i] == N + (i+1)*(i+1))
[L15] COND TRUE !(cond)
[L15] reach_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 215.1s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 83.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 601 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 601 mSDsluCounter, 651 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 807 IncrementalHoareTripleChecker+Unchecked, 496 mSDsCounter, 276 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1025 IncrementalHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 276 mSolverCounterUnsat, 155 mSDtfsCounter, 1025 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 487 GetRequests, 278 SyntacticMatches, 10 SemanticMatches, 199 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2592 ImplicationChecksByTransitivity, 149.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=10, InterpolantAutomatonStates: 162, 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, 10 MinimizatonAttempts, 144 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 128.4s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 452 ConstructedInterpolants, 65 QuantifiedInterpolants, 9574 SizeOfPredicates, 85 NumberOfNonLiveVariables, 1094 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 80/262 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2021-12-17 01:57:46,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/nsqm-if.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d7989c0f7330a23b935c06e29a235b3d1d683ab2aa8325b4804307d493787f2
--- Real Ultimate output ---
This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41
[2021-12-17 01:57:47,692 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-12-17 01:57:47,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-12-17 01:57:47,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-12-17 01:57:47,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-12-17 01:57:47,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-12-17 01:57:47,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-12-17 01:57:47,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-12-17 01:57:47,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-12-17 01:57:47,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-12-17 01:57:47,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-12-17 01:57:47,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-12-17 01:57:47,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-12-17 01:57:47,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-12-17 01:57:47,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-12-17 01:57:47,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-12-17 01:57:47,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-12-17 01:57:47,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-12-17 01:57:47,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-12-17 01:57:47,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-12-17 01:57:47,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-12-17 01:57:47,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-12-17 01:57:47,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-12-17 01:57:47,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-12-17 01:57:47,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-12-17 01:57:47,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-12-17 01:57:47,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-12-17 01:57:47,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-12-17 01:57:47,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-12-17 01:57:47,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-12-17 01:57:47,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-12-17 01:57:47,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-12-17 01:57:47,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-12-17 01:57:47,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-12-17 01:57:47,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-12-17 01:57:47,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-12-17 01:57:47,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-12-17 01:57:47,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-12-17 01:57:47,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-12-17 01:57:47,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-12-17 01:57:47,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-12-17 01:57:47,745 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2021-12-17 01:57:47,763 INFO L113 SettingsManager]: Loading preferences was successful
[2021-12-17 01:57:47,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-12-17 01:57:47,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-12-17 01:57:47,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-12-17 01:57:47,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-12-17 01:57:47,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-12-17 01:57:47,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * Use SBE=true
[2021-12-17 01:57:47,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * sizeof long=4
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2021-12-17 01:57:47,765 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * sizeof long double=12
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-12-17 01:57:47,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-17 01:57:47,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-12-17 01:57:47,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-12-17 01:57:47,767 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2021-12-17 01:57:47,767 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2021-12-17 01:57:47,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-12-17 01:57:47,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-12-17 01:57:47,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-12-17 01:57:47,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-12-17 01:57:47,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2021-12-17 01:57:47,767 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d7989c0f7330a23b935c06e29a235b3d1d683ab2aa8325b4804307d493787f2
[2021-12-17 01:57:48,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-12-17 01:57:48,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-12-17 01:57:48,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-12-17 01:57:48,025 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-12-17 01:57:48,025 INFO L275 PluginConnector]: CDTParser initialized
[2021-12-17 01:57:48,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/nsqm-if.c
[2021-12-17 01:57:48,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def5c50fd/97682ead47fd437ab04361a4d5adb2a3/FLAGd8bd77bf2
[2021-12-17 01:57:48,435 INFO L306 CDTParser]: Found 1 translation units.
[2021-12-17 01:57:48,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqm-if.c
[2021-12-17 01:57:48,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def5c50fd/97682ead47fd437ab04361a4d5adb2a3/FLAGd8bd77bf2
[2021-12-17 01:57:48,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def5c50fd/97682ead47fd437ab04361a4d5adb2a3
[2021-12-17 01:57:48,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-12-17 01:57:48,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-12-17 01:57:48,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-12-17 01:57:48,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-12-17 01:57:48,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-12-17 01:57:48,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a6e25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48, skipping insertion in model container
[2021-12-17 01:57:48,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-12-17 01:57:48,467 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-12-17 01:57:48,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqm-if.c[590,603]
[2021-12-17 01:57:48,604 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-17 01:57:48,612 INFO L203 MainTranslator]: Completed pre-run
[2021-12-17 01:57:48,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/nsqm-if.c[590,603]
[2021-12-17 01:57:48,658 INFO L209 PostProcessor]: Analyzing one entry point: main
[2021-12-17 01:57:48,667 INFO L208 MainTranslator]: Completed translation
[2021-12-17 01:57:48,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48 WrapperNode
[2021-12-17 01:57:48,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-12-17 01:57:48,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-12-17 01:57:48,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-12-17 01:57:48,669 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-12-17 01:57:48,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,702 INFO L137 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73
[2021-12-17 01:57:48,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-12-17 01:57:48,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-12-17 01:57:48,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-12-17 01:57:48,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-12-17 01:57:48,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-12-17 01:57:48,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-12-17 01:57:48,737 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-12-17 01:57:48,737 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-12-17 01:57:48,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (1/1) ...
[2021-12-17 01:57:48,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-12-17 01:57:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-12-17 01:57:48,758 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)
[2021-12-17 01:57:48,782 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
[2021-12-17 01:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2021-12-17 01:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2021-12-17 01:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8
[2021-12-17 01:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-12-17 01:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-12-17 01:57:48,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-12-17 01:57:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8
[2021-12-17 01:57:48,849 INFO L236 CfgBuilder]: Building ICFG
[2021-12-17 01:57:48,850 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2021-12-17 01:57:49,110 INFO L277 CfgBuilder]: Performing block encoding
[2021-12-17 01:57:49,114 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-12-17 01:57:49,114 INFO L301 CfgBuilder]: Removed 3 assume(true) statements.
[2021-12-17 01:57:49,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:57:49 BoogieIcfgContainer
[2021-12-17 01:57:49,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-12-17 01:57:49,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-12-17 01:57:49,116 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-12-17 01:57:49,118 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-12-17 01:57:49,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 01:57:48" (1/3) ...
[2021-12-17 01:57:49,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7749a055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:57:49, skipping insertion in model container
[2021-12-17 01:57:49,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 01:57:48" (2/3) ...
[2021-12-17 01:57:49,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7749a055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 01:57:49, skipping insertion in model container
[2021-12-17 01:57:49,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 01:57:49" (3/3) ...
[2021-12-17 01:57:49,120 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqm-if.c
[2021-12-17 01:57:49,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-12-17 01:57:49,124 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-12-17 01:57:49,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-12-17 01:57:49,168 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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
[2021-12-17 01:57:49,168 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-12-17 01:57:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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)
[2021-12-17 01:57:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-12-17 01:57:49,182 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:57:49,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:57:49,183 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:57:49,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:57:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times
[2021-12-17 01:57:49,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 01:57:49,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6826167]
[2021-12-17 01:57:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:57:49,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 01:57:49,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 01:57:49,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 01:57:49,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2021-12-17 01:57:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:57:49,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core
[2021-12-17 01:57:49,309 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:57:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:57:49,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-12-17 01:57:49,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-12-17 01:57:49,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6826167]
[2021-12-17 01:57:49,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6826167] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 01:57:49,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 01:57:49,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-12-17 01:57:49,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104608812]
[2021-12-17 01:57:49,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 01:57:49,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-12-17 01:57:49,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-12-17 01:57:49,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-12-17 01:57:49,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-12-17 01:57:49,381 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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)
[2021-12-17 01:57:49,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:57:49,394 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions.
[2021-12-17 01:57:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-12-17 01:57:49,396 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) Word has length 12
[2021-12-17 01:57:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:57:49,406 INFO L225 Difference]: With dead ends: 42
[2021-12-17 01:57:49,406 INFO L226 Difference]: Without dead ends: 19
[2021-12-17 01:57:49,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-12-17 01:57:49,410 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2021-12-17 01:57:49,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2021-12-17 01:57:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2021-12-17 01:57:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2021-12-17 01:57:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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)
[2021-12-17 01:57:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions.
[2021-12-17 01:57:49,430 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12
[2021-12-17 01:57:49,430 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:57:49,430 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions.
[2021-12-17 01:57:49,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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)
[2021-12-17 01:57:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions.
[2021-12-17 01:57:49,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2021-12-17 01:57:49,431 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:57:49,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:57:49,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0
[2021-12-17 01:57:49,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2021-12-17 01:57:49,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:57:49,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:57:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times
[2021-12-17 01:57:49,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 01:57:49,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560455057]
[2021-12-17 01:57:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:57:49,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 01:57:49,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 01:57:49,641 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 01:57:49,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2021-12-17 01:57:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:57:49,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core
[2021-12-17 01:57:49,712 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:57:49,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:57:49,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-12-17 01:57:49,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-12-17 01:57:49,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560455057]
[2021-12-17 01:57:49,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560455057] provided 1 perfect and 0 imperfect interpolant sequences
[2021-12-17 01:57:49,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-12-17 01:57:49,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-12-17 01:57:49,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764817974]
[2021-12-17 01:57:49,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-12-17 01:57:49,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-12-17 01:57:49,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-12-17 01:57:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-12-17 01:57:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-12-17 01:57:49,835 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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)
[2021-12-17 01:57:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:57:50,040 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions.
[2021-12-17 01:57:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-12-17 01:57:50,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) Word has length 12
[2021-12-17 01:57:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:57:50,049 INFO L225 Difference]: With dead ends: 45
[2021-12-17 01:57:50,049 INFO L226 Difference]: Without dead ends: 31
[2021-12-17 01:57:50,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2021-12-17 01:57:50,050 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 66 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2021-12-17 01:57:50,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 15 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2021-12-17 01:57:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-12-17 01:57:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23.
[2021-12-17 01:57:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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)
[2021-12-17 01:57:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions.
[2021-12-17 01:57:50,055 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12
[2021-12-17 01:57:50,055 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:57:50,056 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions.
[2021-12-17 01:57:50,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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)
[2021-12-17 01:57:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions.
[2021-12-17 01:57:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-12-17 01:57:50,056 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:57:50,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:57:50,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0
[2021-12-17 01:57:50,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2021-12-17 01:57:50,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:57:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:57:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times
[2021-12-17 01:57:50,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 01:57:50,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868050394]
[2021-12-17 01:57:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:57:50,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 01:57:50,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 01:57:50,260 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 01:57:50,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2021-12-17 01:57:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:57:50,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 18 conjunts are in the unsatisfiable core
[2021-12-17 01:57:50,386 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:57:50,642 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:50,646 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:50,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25
[2021-12-17 01:57:50,849 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-12-17 01:57:50,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 41
[2021-12-17 01:57:50,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:57:50,897 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:57:51,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30
[2021-12-17 01:57:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:57:52,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-12-17 01:57:52,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868050394]
[2021-12-17 01:57:52,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868050394] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:57:52,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:57:52,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16
[2021-12-17 01:57:52,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335200849]
[2021-12-17 01:57:52,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:57:52,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-12-17 01:57:52,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-12-17 01:57:52,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-12-17 01:57:52,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240
[2021-12-17 01:57:52,499 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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)
[2021-12-17 01:57:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:57:56,816 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions.
[2021-12-17 01:57:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-12-17 01:57:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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) Word has length 18
[2021-12-17 01:57:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:57:56,825 INFO L225 Difference]: With dead ends: 70
[2021-12-17 01:57:56,826 INFO L226 Difference]: Without dead ends: 43
[2021-12-17 01:57:56,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930
[2021-12-17 01:57:56,828 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 150 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2021-12-17 01:57:56,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 68 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2021-12-17 01:57:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2021-12-17 01:57:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31.
[2021-12-17 01:57:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 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)
[2021-12-17 01:57:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions.
[2021-12-17 01:57:56,833 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18
[2021-12-17 01:57:56,833 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:57:56,834 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions.
[2021-12-17 01:57:56,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 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)
[2021-12-17 01:57:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions.
[2021-12-17 01:57:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2021-12-17 01:57:56,834 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:57:56,835 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:57:56,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2021-12-17 01:57:57,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2021-12-17 01:57:57,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:57:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:57:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times
[2021-12-17 01:57:57,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 01:57:57,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160995433]
[2021-12-17 01:57:57,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:57:57,043 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 01:57:57,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 01:57:57,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 01:57:57,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2021-12-17 01:57:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:57:57,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-12-17 01:57:57,168 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:57:57,414 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:57,415 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:57,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25
[2021-12-17 01:57:57,570 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:57,571 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:57,571 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:57,572 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:57,573 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:57:57,576 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-12-17 01:57:57,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 49
[2021-12-17 01:57:57,695 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-12-17 01:57:57,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 41
[2021-12-17 01:57:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:57:57,719 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:57:59,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88
[2021-12-17 01:58:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:58:04,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-12-17 01:58:04,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160995433]
[2021-12-17 01:58:04,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160995433] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:58:04,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:58:04,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25
[2021-12-17 01:58:04,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785986334]
[2021-12-17 01:58:04,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:58:04,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2021-12-17 01:58:04,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-12-17 01:58:04,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2021-12-17 01:58:04,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600
[2021-12-17 01:58:04,693 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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)
[2021-12-17 01:58:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:58:14,701 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions.
[2021-12-17 01:58:14,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2021-12-17 01:58:14,708 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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) Word has length 24
[2021-12-17 01:58:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:58:14,709 INFO L225 Difference]: With dead ends: 155
[2021-12-17 01:58:14,709 INFO L226 Difference]: Without dead ends: 134
[2021-12-17 01:58:14,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=858, Invalid=3174, Unknown=0, NotChecked=0, Total=4032
[2021-12-17 01:58:14,712 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 285 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2021-12-17 01:58:14,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 116 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 257 Invalid, 0 Unknown, 92 Unchecked, 1.8s Time]
[2021-12-17 01:58:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2021-12-17 01:58:14,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 46.
[2021-12-17 01:58:14,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 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)
[2021-12-17 01:58:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions.
[2021-12-17 01:58:14,722 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 24
[2021-12-17 01:58:14,722 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:58:14,722 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions.
[2021-12-17 01:58:14,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 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)
[2021-12-17 01:58:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions.
[2021-12-17 01:58:14,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-12-17 01:58:14,723 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:58:14,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:58:14,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0
[2021-12-17 01:58:14,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2021-12-17 01:58:14,928 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:58:14,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:58:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash -672376363, now seen corresponding path program 2 times
[2021-12-17 01:58:14,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 01:58:14,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092883849]
[2021-12-17 01:58:14,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-12-17 01:58:14,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 01:58:14,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 01:58:14,930 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 01:58:14,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2021-12-17 01:58:15,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-12-17 01:58:15,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 01:58:15,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core
[2021-12-17 01:58:15,078 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:58:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:58:15,331 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:58:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:58:15,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-12-17 01:58:15,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092883849]
[2021-12-17 01:58:15,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092883849] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 01:58:15,984 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 01:58:15,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22
[2021-12-17 01:58:15,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058898925]
[2021-12-17 01:58:15,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 01:58:15,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2021-12-17 01:58:15,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-12-17 01:58:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2021-12-17 01:58:15,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462
[2021-12-17 01:58:15,985 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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)
[2021-12-17 01:58:19,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 01:58:19,673 INFO L93 Difference]: Finished difference Result 221 states and 273 transitions.
[2021-12-17 01:58:19,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2021-12-17 01:58:19,679 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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) Word has length 27
[2021-12-17 01:58:19,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 01:58:19,681 INFO L225 Difference]: With dead ends: 221
[2021-12-17 01:58:19,681 INFO L226 Difference]: Without dead ends: 188
[2021-12-17 01:58:19,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=579, Invalid=1871, Unknown=0, NotChecked=0, Total=2450
[2021-12-17 01:58:19,682 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 543 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2021-12-17 01:58:19,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 168 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2021-12-17 01:58:19,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2021-12-17 01:58:19,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 98.
[2021-12-17 01:58:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.2474226804123711) internal successors, (121), 97 states have internal predecessors, (121), 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)
[2021-12-17 01:58:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions.
[2021-12-17 01:58:19,697 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 27
[2021-12-17 01:58:19,697 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 01:58:19,697 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions.
[2021-12-17 01:58:19,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 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)
[2021-12-17 01:58:19,697 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions.
[2021-12-17 01:58:19,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-12-17 01:58:19,698 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 01:58:19,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 01:58:19,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0
[2021-12-17 01:58:19,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2021-12-17 01:58:19,907 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 01:58:19,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 01:58:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times
[2021-12-17 01:58:19,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 01:58:19,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640248198]
[2021-12-17 01:58:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 01:58:19,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 01:58:19,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 01:58:19,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 01:58:19,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2021-12-17 01:58:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 01:58:20,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 35 conjunts are in the unsatisfiable core
[2021-12-17 01:58:20,181 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 01:58:20,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16
[2021-12-17 01:58:20,287 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,288 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19
[2021-12-17 01:58:20,430 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,431 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,432 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,433 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,433 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,434 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50
[2021-12-17 01:58:20,634 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,635 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,636 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 49
[2021-12-17 01:58:20,849 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,850 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,851 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,852 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,852 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,853 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,854 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,854 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 01:58:20,855 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 01:58:20,859 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size
[2021-12-17 01:58:20,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 87
[2021-12-17 01:58:21,388 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size
[2021-12-17 01:58:21,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 131 treesize of output 95
[2021-12-17 01:58:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 01:58:21,425 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 01:58:32,016 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 01:58:33,754 INFO L354 Elim1Store]: treesize reduction 244, result has 22.3 percent of original size
[2021-12-17 01:58:33,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 10690966 treesize of output 5972443
[2021-12-17 01:58:38,771 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-12-17 01:58:38,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6402492 treesize of output 6066624
[2021-12-17 01:58:53,110 WARN L227 SmtUtils]: Spent 9.24s on a formula simplification. DAG size of input: 999 DAG size of output: 999 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2021-12-17 02:01:00,009 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:01:00,011 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:01:00,012 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:01:00,017 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:01:01,649 INFO L354 Elim1Store]: treesize reduction 73, result has 27.0 percent of original size
[2021-12-17 02:01:01,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1171 treesize of output 1039
[2021-12-17 02:01:04,937 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:01:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 02:01:04,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-12-17 02:01:04,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640248198]
[2021-12-17 02:01:04,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640248198] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 02:01:04,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 02:01:04,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31
[2021-12-17 02:01:04,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108436475]
[2021-12-17 02:01:04,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 02:01:04,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states
[2021-12-17 02:01:04,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-12-17 02:01:04,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2021-12-17 02:01:04,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930
[2021-12-17 02:01:04,958 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 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)
[2021-12-17 02:01:32,716 WARN L227 SmtUtils]: Spent 11.49s on a formula simplification. DAG size of input: 101 DAG size of output: 96 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-12-17 02:01:41,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []
[2021-12-17 02:02:08,475 WARN L227 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 101 DAG size of output: 96 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-12-17 02:02:29,129 WARN L227 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 104 DAG size of output: 99 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2021-12-17 02:02:44,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 02:02:44,100 INFO L93 Difference]: Finished difference Result 162 states and 191 transitions.
[2021-12-17 02:02:44,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2021-12-17 02:02:44,107 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 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) Word has length 28
[2021-12-17 02:02:44,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 02:02:44,108 INFO L225 Difference]: With dead ends: 162
[2021-12-17 02:02:44,108 INFO L226 Difference]: Without dead ends: 138
[2021-12-17 02:02:44,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 925 ImplicationChecksByTransitivity, 92.9s TimeCoverageRelationStatistics Valid=697, Invalid=3085, Unknown=0, NotChecked=0, Total=3782
[2021-12-17 02:02:44,110 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 190 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 125 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time
[2021-12-17 02:02:44,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 105 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 370 Invalid, 1 Unknown, 192 Unchecked, 16.9s Time]
[2021-12-17 02:02:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2021-12-17 02:02:44,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112.
[2021-12-17 02:02:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2342342342342343) internal successors, (137), 111 states have internal predecessors, (137), 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)
[2021-12-17 02:02:44,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 137 transitions.
[2021-12-17 02:02:44,120 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 137 transitions. Word has length 28
[2021-12-17 02:02:44,121 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 02:02:44,121 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 137 transitions.
[2021-12-17 02:02:44,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 31 states have internal predecessors, (53), 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)
[2021-12-17 02:02:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 137 transitions.
[2021-12-17 02:02:44,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2021-12-17 02:02:44,122 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 02:02:44,122 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 02:02:44,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0
[2021-12-17 02:02:44,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2021-12-17 02:02:44,333 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 02:02:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 02:02:44,334 INFO L85 PathProgramCache]: Analyzing trace with hash -351973093, now seen corresponding path program 1 times
[2021-12-17 02:02:44,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 02:02:44,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746582472]
[2021-12-17 02:02:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-12-17 02:02:44,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 02:02:44,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 02:02:44,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 02:02:44,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2021-12-17 02:02:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-12-17 02:02:44,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-12-17 02:02:44,442 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 02:02:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-12-17 02:02:44,774 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 02:02:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-12-17 02:02:45,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-12-17 02:02:45,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746582472]
[2021-12-17 02:02:45,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746582472] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 02:02:45,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 02:02:45,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21
[2021-12-17 02:02:45,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198252903]
[2021-12-17 02:02:45,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 02:02:45,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-12-17 02:02:45,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-12-17 02:02:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-12-17 02:02:45,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420
[2021-12-17 02:02:45,423 INFO L87 Difference]: Start difference. First operand 112 states and 137 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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)
[2021-12-17 02:02:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 02:02:46,790 INFO L93 Difference]: Finished difference Result 251 states and 304 transitions.
[2021-12-17 02:02:46,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-12-17 02:02:46,791 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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) Word has length 28
[2021-12-17 02:02:46,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 02:02:46,792 INFO L225 Difference]: With dead ends: 251
[2021-12-17 02:02:46,792 INFO L226 Difference]: Without dead ends: 159
[2021-12-17 02:02:46,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260
[2021-12-17 02:02:46,793 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 398 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2021-12-17 02:02:46,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 110 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2021-12-17 02:02:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2021-12-17 02:02:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 110.
[2021-12-17 02:02:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 109 states have internal predecessors, (128), 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)
[2021-12-17 02:02:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions.
[2021-12-17 02:02:46,807 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 28
[2021-12-17 02:02:46,807 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 02:02:46,807 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions.
[2021-12-17 02:02:46,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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)
[2021-12-17 02:02:46,808 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions.
[2021-12-17 02:02:46,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2021-12-17 02:02:46,808 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 02:02:46,809 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 02:02:46,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0
[2021-12-17 02:02:47,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2021-12-17 02:02:47,022 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 02:02:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 02:02:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1487245307, now seen corresponding path program 3 times
[2021-12-17 02:02:47,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 02:02:47,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32696507]
[2021-12-17 02:02:47,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-12-17 02:02:47,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 02:02:47,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 02:02:47,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 02:02:47,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2021-12-17 02:02:47,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-12-17 02:02:47,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 02:02:47,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 24 conjunts are in the unsatisfiable core
[2021-12-17 02:02:47,272 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 02:02:47,428 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25
[2021-12-17 02:02:47,538 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,539 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,540 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,541 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,542 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,543 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,545 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-12-17 02:02:47,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 56
[2021-12-17 02:02:47,687 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,688 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,689 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,690 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,691 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,698 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:02:47,701 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-12-17 02:02:47,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 56
[2021-12-17 02:02:47,927 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-12-17 02:02:47,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 41
[2021-12-17 02:02:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-12-17 02:02:47,963 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 02:02:51,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 86
[2021-12-17 02:03:00,079 WARN L227 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 432 DAG size of output: 432 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2021-12-17 02:03:00,095 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-12-17 02:03:00,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2021-12-17 02:03:00,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32696507]
[2021-12-17 02:03:00,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32696507] provided 0 perfect and 2 imperfect interpolant sequences
[2021-12-17 02:03:00,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2021-12-17 02:03:00,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23
[2021-12-17 02:03:00,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55555039]
[2021-12-17 02:03:00,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2021-12-17 02:03:00,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2021-12-17 02:03:00,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2021-12-17 02:03:00,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-12-17 02:03:00,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506
[2021-12-17 02:03:00,098 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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)
[2021-12-17 02:03:09,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-12-17 02:03:09,425 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions.
[2021-12-17 02:03:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2021-12-17 02:03:09,437 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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) Word has length 30
[2021-12-17 02:03:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-12-17 02:03:09,438 INFO L225 Difference]: With dead ends: 175
[2021-12-17 02:03:09,438 INFO L226 Difference]: Without dead ends: 173
[2021-12-17 02:03:09,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=609, Invalid=1941, Unknown=0, NotChecked=0, Total=2550
[2021-12-17 02:03:09,439 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 136 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time
[2021-12-17 02:03:09,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 78 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 255 Invalid, 0 Unknown, 230 Unchecked, 2.2s Time]
[2021-12-17 02:03:09,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states.
[2021-12-17 02:03:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 131.
[2021-12-17 02:03:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 130 states have internal predecessors, (155), 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)
[2021-12-17 02:03:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 155 transitions.
[2021-12-17 02:03:09,451 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 155 transitions. Word has length 30
[2021-12-17 02:03:09,451 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-12-17 02:03:09,451 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 155 transitions.
[2021-12-17 02:03:09,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 states have internal predecessors, (47), 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)
[2021-12-17 02:03:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 155 transitions.
[2021-12-17 02:03:09,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2021-12-17 02:03:09,452 INFO L506 BasicCegarLoop]: Found error trace
[2021-12-17 02:03:09,453 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-12-17 02:03:09,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2021-12-17 02:03:09,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3
[2021-12-17 02:03:09,658 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2021-12-17 02:03:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-12-17 02:03:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708229, now seen corresponding path program 2 times
[2021-12-17 02:03:09,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF
[2021-12-17 02:03:09,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911818338]
[2021-12-17 02:03:09,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-12-17 02:03:09,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3
[2021-12-17 02:03:09,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2021-12-17 02:03:09,659 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2021-12-17 02:03:09,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2021-12-17 02:03:09,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-12-17 02:03:09,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-12-17 02:03:09,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 43 conjunts are in the unsatisfiable core
[2021-12-17 02:03:09,986 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-12-17 02:03:10,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16
[2021-12-17 02:03:10,125 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,125 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19
[2021-12-17 02:03:10,249 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,250 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,251 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,251 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,252 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50
[2021-12-17 02:03:10,461 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,462 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,463 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,464 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,465 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,466 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43
[2021-12-17 02:03:10,620 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,621 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,623 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 49
[2021-12-17 02:03:10,858 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,859 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,860 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,861 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,863 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,864 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,865 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,867 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,868 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,869 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,870 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,879 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,880 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,882 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,883 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:10,883 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:10,884 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,885 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,887 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:10,888 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:10,889 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:10,889 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:10,902 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size
[2021-12-17 02:03:10,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 168 treesize of output 149
[2021-12-17 02:03:11,284 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,285 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,286 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,287 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,288 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,289 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,290 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,291 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,291 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,292 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,293 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,294 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,296 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,297 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,298 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,299 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,300 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,301 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,302 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,303 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,304 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,305 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,306 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,307 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,309 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,310 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,311 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,313 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,314 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,314 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,315 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,316 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:11,316 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:11,316 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:11,317 INFO L190 IndexEqualityManager]: detected not equals via solver
[2021-12-17 02:03:11,318 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:11,318 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:11,328 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size
[2021-12-17 02:03:11,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 197 treesize of output 184
[2021-12-17 02:03:12,154 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size
[2021-12-17 02:03:12,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 143 treesize of output 75
[2021-12-17 02:03:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-12-17 02:03:12,210 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-12-17 02:03:25,319 INFO L173 IndexEqualityManager]: detected equality via solver
[2021-12-17 02:03:30,189 INFO L354 Elim1Store]: treesize reduction 856, result has 12.2 percent of original size
[2021-12-17 02:03:30,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 20579621194 treesize of output 9104005568
Killed by 15