./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for memory safety (deref-memtrack)
Using default analysis
Version b5237d83
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf92ba2f935aadbe2c0ae3d366f72b4144ff6b8b5ce7c503e628d249b478be5
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-b5237d8
[2022-11-21 17:12:37,638 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-11-21 17:12:37,640 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-21 17:12:37,685 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-21 17:12:37,687 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-21 17:12:37,692 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-21 17:12:37,693 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-21 17:12:37,696 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-21 17:12:37,699 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-21 17:12:37,701 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-21 17:12:37,703 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-11-21 17:12:37,706 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-21 17:12:37,707 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-21 17:12:37,711 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-21 17:12:37,717 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-21 17:12:37,719 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-21 17:12:37,722 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-21 17:12:37,729 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-21 17:12:37,730 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-21 17:12:37,732 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-21 17:12:37,733 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-21 17:12:37,734 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-21 17:12:37,735 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-11-21 17:12:37,736 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-21 17:12:37,740 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-21 17:12:37,740 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-21 17:12:37,740 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-21 17:12:37,741 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-21 17:12:37,742 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-21 17:12:37,742 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-21 17:12:37,743 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-21 17:12:37,744 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-21 17:12:37,744 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-21 17:12:37,745 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-21 17:12:37,746 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-21 17:12:37,746 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-21 17:12:37,747 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-21 17:12:37,747 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-21 17:12:37,748 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-21 17:12:37,749 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-21 17:12:37,749 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-11-21 17:12:37,750 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2022-11-21 17:12:37,774 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-11-21 17:12:37,774 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-21 17:12:37,775 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-21 17:12:37,775 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-21 17:12:37,776 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-21 17:12:37,776 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-21 17:12:37,777 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-21 17:12:37,777 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-11-21 17:12:37,777 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-11-21 17:12:37,777 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-21 17:12:37,778 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-11-21 17:12:37,778 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2022-11-21 17:12:37,778 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-11-21 17:12:37,778 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-11-21 17:12:37,778 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-11-21 17:12:37,778 INFO  L138        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2022-11-21 17:12:37,779 INFO  L138        SettingsManager]:  * Bitprecise bitfields=true
[2022-11-21 17:12:37,779 INFO  L138        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2022-11-21 17:12:37,779 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-21 17:12:37,779 INFO  L138        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2022-11-21 17:12:37,779 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-11-21 17:12:37,780 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-11-21 17:12:37,780 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-21 17:12:37,780 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-11-21 17:12:37,780 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-11-21 17:12:37,780 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-21 17:12:37,781 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-21 17:12:37,781 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-11-21 17:12:37,781 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-11-21 17:12:37,781 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-21 17:12:37,781 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a
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 valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )


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 -> 5bf92ba2f935aadbe2c0ae3d366f72b4144ff6b8b5ce7c503e628d249b478be5
[2022-11-21 17:12:38,091 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-21 17:12:38,130 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-21 17:12:38,133 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-21 17:12:38,135 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-11-21 17:12:38,135 INFO  L275        PluginConnector]: CDTParser initialized
[2022-11-21 17:12:38,137 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i
[2022-11-21 17:12:41,273 INFO  L500              CDTParser]: Created temporary CDT project at NULL
[2022-11-21 17:12:41,560 INFO  L351              CDTParser]: Found 1 translation units.
[2022-11-21 17:12:41,561 INFO  L172              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i
[2022-11-21 17:12:41,572 INFO  L394              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/data/de9c6646a/03eedbf439584e0cabf34fb737081429/FLAG37d41d41f
[2022-11-21 17:12:41,595 INFO  L402              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/data/de9c6646a/03eedbf439584e0cabf34fb737081429
[2022-11-21 17:12:41,601 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-21 17:12:41,605 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-21 17:12:41,608 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-21 17:12:41,608 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-21 17:12:41,612 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-21 17:12:41,613 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:12:41" (1/1) ...
[2022-11-21 17:12:41,614 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32cb28c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:41, skipping insertion in model container
[2022-11-21 17:12:41,614 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:12:41" (1/1) ...
[2022-11-21 17:12:41,624 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-11-21 17:12:41,676 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-11-21 17:12:41,967 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i[24494,24507]
[2022-11-21 17:12:41,969 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-21 17:12:41,979 INFO  L203         MainTranslator]: Completed pre-run
[2022-11-21 17:12:42,055 WARN  L237   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert-2.i[24494,24507]
[2022-11-21 17:12:42,058 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-11-21 17:12:42,098 INFO  L208         MainTranslator]: Completed translation
[2022-11-21 17:12:42,099 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42 WrapperNode
[2022-11-21 17:12:42,101 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-21 17:12:42,103 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-21 17:12:42,104 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-21 17:12:42,104 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-21 17:12:42,112 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,125 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,149 INFO  L138                Inliner]: procedures = 129, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132
[2022-11-21 17:12:42,150 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-21 17:12:42,151 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-21 17:12:42,151 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-21 17:12:42,151 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-11-21 17:12:42,161 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,161 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,165 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,165 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,174 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,179 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,181 INFO  L185        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,182 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,185 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-21 17:12:42,186 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-21 17:12:42,186 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-11-21 17:12:42,187 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-11-21 17:12:42,188 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (1/1) ...
[2022-11-21 17:12:42,194 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-21 17:12:42,206 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:12:42,229 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-21 17:12:42,260 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-21 17:12:42,279 INFO  L130     BoogieDeclarations]: Found specification of procedure myexit
[2022-11-21 17:12:42,279 INFO  L138     BoogieDeclarations]: Found implementation of procedure myexit
[2022-11-21 17:12:42,279 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2022-11-21 17:12:42,279 INFO  L130     BoogieDeclarations]: Found specification of procedure _get_nondet_int
[2022-11-21 17:12:42,280 INFO  L138     BoogieDeclarations]: Found implementation of procedure _get_nondet_int
[2022-11-21 17:12:42,280 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-21 17:12:42,280 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-21 17:12:42,280 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2022-11-21 17:12:42,280 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2022-11-21 17:12:42,280 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-21 17:12:42,280 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2022-11-21 17:12:42,280 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-21 17:12:42,280 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-21 17:12:42,281 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-21 17:12:42,458 INFO  L235             CfgBuilder]: Building ICFG
[2022-11-21 17:12:42,461 INFO  L261             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-21 17:12:42,508 INFO  L769   $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true;
[2022-11-21 17:12:42,922 INFO  L276             CfgBuilder]: Performing block encoding
[2022-11-21 17:12:42,935 INFO  L295             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-21 17:12:42,935 INFO  L300             CfgBuilder]: Removed 6 assume(true) statements.
[2022-11-21 17:12:42,938 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:12:42 BoogieIcfgContainer
[2022-11-21 17:12:42,938 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-21 17:12:42,941 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-21 17:12:42,941 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-11-21 17:12:42,944 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-11-21 17:12:42,944 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:12:41" (1/3) ...
[2022-11-21 17:12:42,945 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7106992d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:12:42, skipping insertion in model container
[2022-11-21 17:12:42,945 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:12:42" (2/3) ...
[2022-11-21 17:12:42,946 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7106992d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:12:42, skipping insertion in model container
[2022-11-21 17:12:42,946 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:12:42" (3/3) ...
[2022-11-21 17:12:42,947 INFO  L112   eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i
[2022-11-21 17:12:42,968 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-21 17:12:42,968 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations.
[2022-11-21 17:12:43,012 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-21 17:12:43,019 INFO  L357      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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3caa1198, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-21 17:12:43,019 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 25 error locations.
[2022-11-21 17:12:43,024 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 86 states, 54 states have (on average 1.7777777777777777) internal successors, (96), 80 states have internal predecessors, (96), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:43,031 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-11-21 17:12:43,031 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:43,032 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:43,032 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:43,037 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:43,037 INFO  L85        PathProgramCache]: Analyzing trace with hash -1721266506, now seen corresponding path program 1 times
[2022-11-21 17:12:43,045 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:43,046 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71892090]
[2022-11-21 17:12:43,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:43,047 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:43,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:43,256 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:43,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:43,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:12:43,268 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:43,268 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71892090]
[2022-11-21 17:12:43,269 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71892090] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:12:43,269 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:12:43,269 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-21 17:12:43,271 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906563102]
[2022-11-21 17:12:43,272 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:12:43,276 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-21 17:12:43,277 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:43,305 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-21 17:12:43,306 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-21 17:12:43,309 INFO  L87              Difference]: Start difference. First operand  has 86 states, 54 states have (on average 1.7777777777777777) internal successors, (96), 80 states have internal predecessors, (96), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-21 17:12:43,332 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:43,333 INFO  L93              Difference]: Finished difference Result 86 states and 97 transitions.
[2022-11-21 17:12:43,334 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-11-21 17:12:43,335 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13
[2022-11-21 17:12:43,335 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:43,343 INFO  L225             Difference]: With dead ends: 86
[2022-11-21 17:12:43,344 INFO  L226             Difference]: Without dead ends: 80
[2022-11-21 17:12:43,346 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-21 17:12:43,352 INFO  L413           NwaCegarLoop]: 97 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, 97 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
[2022-11-21 17:12:43,353 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-21 17:12:43,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2022-11-21 17:12:43,406 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2022-11-21 17:12:43,408 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:43,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions.
[2022-11-21 17:12:43,414 INFO  L78                 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 13
[2022-11-21 17:12:43,415 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:43,415 INFO  L495      AbstractCegarLoop]: Abstraction has 80 states and 89 transitions.
[2022-11-21 17:12:43,416 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-21 17:12:43,416 INFO  L276                IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions.
[2022-11-21 17:12:43,417 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-11-21 17:12:43,417 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:43,418 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:43,418 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-21 17:12:43,418 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:43,421 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:43,421 INFO  L85        PathProgramCache]: Analyzing trace with hash -1583427249, now seen corresponding path program 1 times
[2022-11-21 17:12:43,421 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:43,422 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507811954]
[2022-11-21 17:12:43,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:43,422 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:43,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:43,635 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:43,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:43,666 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:12:43,666 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:43,667 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507811954]
[2022-11-21 17:12:43,667 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507811954] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:12:43,667 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:12:43,667 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-21 17:12:43,668 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540915179]
[2022-11-21 17:12:43,668 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:12:43,669 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:12:43,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:43,670 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:12:43,670 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:12:43,671 INFO  L87              Difference]: Start difference. First operand 80 states and 89 transitions. Second operand  has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-21 17:12:43,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:43,802 INFO  L93              Difference]: Finished difference Result 141 states and 158 transitions.
[2022-11-21 17:12:43,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:12:43,803 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2022-11-21 17:12:43,804 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:43,805 INFO  L225             Difference]: With dead ends: 141
[2022-11-21 17:12:43,805 INFO  L226             Difference]: Without dead ends: 141
[2022-11-21 17:12:43,806 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:12:43,807 INFO  L413           NwaCegarLoop]: 105 mSDtfsCounter, 65 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:43,808 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 162 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-21 17:12:43,809 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141 states.
[2022-11-21 17:12:43,817 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 79.
[2022-11-21 17:12:43,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79 states, 51 states have (on average 1.607843137254902) internal successors, (82), 74 states have internal predecessors, (82), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:43,819 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions.
[2022-11-21 17:12:43,820 INFO  L78                 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 15
[2022-11-21 17:12:43,820 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:43,820 INFO  L495      AbstractCegarLoop]: Abstraction has 79 states and 88 transitions.
[2022-11-21 17:12:43,821 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-21 17:12:43,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions.
[2022-11-21 17:12:43,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-11-21 17:12:43,822 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:43,822 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:43,822 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-21 17:12:43,823 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:43,823 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:43,823 INFO  L85        PathProgramCache]: Analyzing trace with hash -1583427248, now seen corresponding path program 1 times
[2022-11-21 17:12:43,824 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:43,824 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092163345]
[2022-11-21 17:12:43,824 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:43,824 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:43,845 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:43,946 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:43,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:43,955 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:12:43,955 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:43,956 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092163345]
[2022-11-21 17:12:43,956 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092163345] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:12:43,956 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:12:43,956 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-21 17:12:43,957 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140006048]
[2022-11-21 17:12:43,957 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:12:43,957 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-21 17:12:43,958 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:43,958 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-21 17:12:43,959 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:12:43,959 INFO  L87              Difference]: Start difference. First operand 79 states and 88 transitions. Second operand  has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-21 17:12:44,050 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:44,051 INFO  L93              Difference]: Finished difference Result 142 states and 158 transitions.
[2022-11-21 17:12:44,051 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-11-21 17:12:44,052 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2022-11-21 17:12:44,052 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:44,053 INFO  L225             Difference]: With dead ends: 142
[2022-11-21 17:12:44,053 INFO  L226             Difference]: Without dead ends: 142
[2022-11-21 17:12:44,054 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-21 17:12:44,055 INFO  L413           NwaCegarLoop]: 135 mSDtfsCounter, 67 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:44,056 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 197 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-21 17:12:44,057 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2022-11-21 17:12:44,063 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 78.
[2022-11-21 17:12:44,063 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 78 states, 51 states have (on average 1.588235294117647) internal successors, (81), 73 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:44,065 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions.
[2022-11-21 17:12:44,065 INFO  L78                 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 15
[2022-11-21 17:12:44,065 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:44,066 INFO  L495      AbstractCegarLoop]: Abstraction has 78 states and 87 transitions.
[2022-11-21 17:12:44,066 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-21 17:12:44,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions.
[2022-11-21 17:12:44,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-11-21 17:12:44,067 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:44,067 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:44,067 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-21 17:12:44,068 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:44,068 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:44,069 INFO  L85        PathProgramCache]: Analyzing trace with hash 840693873, now seen corresponding path program 1 times
[2022-11-21 17:12:44,069 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:44,069 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62661810]
[2022-11-21 17:12:44,069 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:44,070 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:44,085 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:44,222 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:44,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:44,382 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2022-11-21 17:12:44,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:44,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-21 17:12:44,392 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:44,392 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62661810]
[2022-11-21 17:12:44,393 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62661810] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:12:44,393 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175952003]
[2022-11-21 17:12:44,393 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:44,393 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:44,394 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:12:44,397 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:12:44,419 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-21 17:12:44,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:44,515 INFO  L263         TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-11-21 17:12:44,528 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:12:44,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:12:44,669 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-21 17:12:44,669 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175952003] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:12:44,670 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-21 17:12:44,670 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12
[2022-11-21 17:12:44,670 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579207027]
[2022-11-21 17:12:44,670 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:12:44,676 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-21 17:12:44,676 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:44,677 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-21 17:12:44,678 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132
[2022-11-21 17:12:44,678 INFO  L87              Difference]: Start difference. First operand 78 states and 87 transitions. Second operand  has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:44,793 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:44,793 INFO  L93              Difference]: Finished difference Result 80 states and 89 transitions.
[2022-11-21 17:12:44,794 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-11-21 17:12:44,794 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26
[2022-11-21 17:12:44,795 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:44,796 INFO  L225             Difference]: With dead ends: 80
[2022-11-21 17:12:44,797 INFO  L226             Difference]: Without dead ends: 80
[2022-11-21 17:12:44,798 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2022-11-21 17:12:44,806 INFO  L413           NwaCegarLoop]: 78 mSDtfsCounter, 3 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:44,808 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 453 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-21 17:12:44,811 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2022-11-21 17:12:44,816 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2022-11-21 17:12:44,819 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 80 states, 53 states have (on average 1.5660377358490567) internal successors, (83), 75 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:44,822 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions.
[2022-11-21 17:12:44,824 INFO  L78                 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 26
[2022-11-21 17:12:44,824 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:44,825 INFO  L495      AbstractCegarLoop]: Abstraction has 80 states and 89 transitions.
[2022-11-21 17:12:44,825 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:44,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions.
[2022-11-21 17:12:44,826 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-11-21 17:12:44,826 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:44,827 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:44,835 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-21 17:12:45,032 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:45,033 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:45,033 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:45,034 INFO  L85        PathProgramCache]: Analyzing trace with hash -838491758, now seen corresponding path program 1 times
[2022-11-21 17:12:45,034 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:45,034 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163393935]
[2022-11-21 17:12:45,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:45,034 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:45,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:45,238 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:45,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:45,321 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2022-11-21 17:12:45,325 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:45,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-21 17:12:45,330 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:45,331 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163393935]
[2022-11-21 17:12:45,331 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163393935] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:12:45,331 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776485511]
[2022-11-21 17:12:45,337 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:45,338 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:45,338 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:12:45,339 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:12:45,359 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-21 17:12:45,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:45,460 INFO  L263         TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-21 17:12:45,464 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:12:45,569 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:12:45,570 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-11-21 17:12:45,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-21 17:12:45,803 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776485511] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-21 17:12:45,803 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-21 17:12:45,804 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15
[2022-11-21 17:12:45,804 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203052083]
[2022-11-21 17:12:45,804 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-21 17:12:45,805 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-11-21 17:12:45,805 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:45,805 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-11-21 17:12:45,805 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210
[2022-11-21 17:12:45,806 INFO  L87              Difference]: Start difference. First operand 80 states and 89 transitions. Second operand  has 15 states, 15 states have (on average 3.2) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2022-11-21 17:12:46,143 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:46,144 INFO  L93              Difference]: Finished difference Result 103 states and 120 transitions.
[2022-11-21 17:12:46,144 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-11-21 17:12:46,145 INFO  L78                 Accepts]: Start accepts. Automaton has  has 15 states, 15 states have (on average 3.2) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31
[2022-11-21 17:12:46,145 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:46,147 INFO  L225             Difference]: With dead ends: 103
[2022-11-21 17:12:46,147 INFO  L226             Difference]: Without dead ends: 103
[2022-11-21 17:12:46,147 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462
[2022-11-21 17:12:46,148 INFO  L413           NwaCegarLoop]: 81 mSDtfsCounter, 31 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:46,148 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 930 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-21 17:12:46,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2022-11-21 17:12:46,153 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85.
[2022-11-21 17:12:46,153 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 85 states, 58 states have (on average 1.5172413793103448) internal successors, (88), 80 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:46,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions.
[2022-11-21 17:12:46,154 INFO  L78                 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 31
[2022-11-21 17:12:46,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:46,154 INFO  L495      AbstractCegarLoop]: Abstraction has 85 states and 94 transitions.
[2022-11-21 17:12:46,154 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 3.2) internal successors, (48), 13 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5)
[2022-11-21 17:12:46,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions.
[2022-11-21 17:12:46,155 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-21 17:12:46,155 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:46,156 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:46,171 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-21 17:12:46,361 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:46,361 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:46,361 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:46,362 INFO  L85        PathProgramCache]: Analyzing trace with hash -686979823, now seen corresponding path program 2 times
[2022-11-21 17:12:46,362 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:46,362 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269335107]
[2022-11-21 17:12:46,362 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:46,362 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:46,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:46,510 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:46,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:46,515 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:12:46,517 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:46,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2022-11-21 17:12:46,521 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:46,521 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269335107]
[2022-11-21 17:12:46,521 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269335107] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:12:46,521 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804251153]
[2022-11-21 17:12:46,522 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-21 17:12:46,522 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:46,522 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:12:46,523 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:12:46,548 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-21 17:12:46,630 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-21 17:12:46,630 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-21 17:12:46,632 INFO  L263         TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-11-21 17:12:46,636 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:12:46,669 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2022-11-21 17:12:46,711 INFO  L321             Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2022-11-21 17:12:46,712 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21
[2022-11-21 17:12:46,735 INFO  L321             Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2022-11-21 17:12:46,735 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 14
[2022-11-21 17:12:46,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-21 17:12:46,796 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-21 17:12:46,796 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804251153] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:12:46,796 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-21 17:12:46,796 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5
[2022-11-21 17:12:46,796 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132106223]
[2022-11-21 17:12:46,796 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:12:46,797 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-21 17:12:46,797 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:46,797 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-21 17:12:46,797 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2022-11-21 17:12:46,798 INFO  L87              Difference]: Start difference. First operand 85 states and 94 transitions. Second operand  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:46,867 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:46,867 INFO  L93              Difference]: Finished difference Result 95 states and 105 transitions.
[2022-11-21 17:12:46,867 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-11-21 17:12:46,867 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36
[2022-11-21 17:12:46,868 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:46,868 INFO  L225             Difference]: With dead ends: 95
[2022-11-21 17:12:46,868 INFO  L226             Difference]: Without dead ends: 95
[2022-11-21 17:12:46,869 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2022-11-21 17:12:46,869 INFO  L413           NwaCegarLoop]: 56 mSDtfsCounter, 75 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:46,869 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 75 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-21 17:12:46,870 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2022-11-21 17:12:46,873 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 83.
[2022-11-21 17:12:46,873 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 83 states, 58 states have (on average 1.4827586206896552) internal successors, (86), 78 states have internal predecessors, (86), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:46,874 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions.
[2022-11-21 17:12:46,874 INFO  L78                 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 36
[2022-11-21 17:12:46,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:46,874 INFO  L495      AbstractCegarLoop]: Abstraction has 83 states and 92 transitions.
[2022-11-21 17:12:46,875 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:46,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions.
[2022-11-21 17:12:46,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2022-11-21 17:12:46,875 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:46,875 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:46,894 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-11-21 17:12:47,095 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:47,096 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:47,096 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:47,096 INFO  L85        PathProgramCache]: Analyzing trace with hash -686979822, now seen corresponding path program 1 times
[2022-11-21 17:12:47,096 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:47,096 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94162082]
[2022-11-21 17:12:47,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:47,097 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:47,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:47,298 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:47,300 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:47,302 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:12:47,304 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:47,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-21 17:12:47,309 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:47,309 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94162082]
[2022-11-21 17:12:47,309 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94162082] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:12:47,309 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781148836]
[2022-11-21 17:12:47,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:47,310 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:47,310 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:12:47,311 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:12:47,335 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-11-21 17:12:47,413 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:47,414 INFO  L263         TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 26 conjunts are in the unsatisfiable core
[2022-11-21 17:12:47,418 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:12:47,434 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2022-11-21 17:12:47,440 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2022-11-21 17:12:47,487 INFO  L321             Elim1Store]: treesize reduction 11, result has 45.0 percent of original size
[2022-11-21 17:12:47,487 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 18
[2022-11-21 17:12:47,512 INFO  L321             Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2022-11-21 17:12:47,512 INFO  L350             Elim1Store]: Elim1 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 11 treesize of output 11
[2022-11-21 17:12:47,590 INFO  L321             Elim1Store]: treesize reduction 11, result has 45.0 percent of original size
[2022-11-21 17:12:47,590 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 12 treesize of output 18
[2022-11-21 17:12:47,661 INFO  L350             Elim1Store]: Elim1 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
[2022-11-21 17:12:47,780 INFO  L321             Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2022-11-21 17:12:47,780 INFO  L350             Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21
[2022-11-21 17:12:47,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:12:47,891 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-11-21 17:12:48,088 INFO  L350             Elim1Store]: Elim1 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 30 treesize of output 26
[2022-11-21 17:12:48,407 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-21 17:12:48,411 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [781148836] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-21 17:12:48,412 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-21 17:12:48,412 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 9] total 19
[2022-11-21 17:12:48,412 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209119253]
[2022-11-21 17:12:48,412 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-21 17:12:48,413 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-11-21 17:12:48,414 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:48,415 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-11-21 17:12:48,415 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380
[2022-11-21 17:12:48,416 INFO  L87              Difference]: Start difference. First operand 83 states and 92 transitions. Second operand  has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-11-21 17:12:48,977 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:48,978 INFO  L93              Difference]: Finished difference Result 149 states and 165 transitions.
[2022-11-21 17:12:48,978 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-11-21 17:12:48,978 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36
[2022-11-21 17:12:48,979 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:48,980 INFO  L225             Difference]: With dead ends: 149
[2022-11-21 17:12:48,980 INFO  L226             Difference]: Without dead ends: 149
[2022-11-21 17:12:48,980 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=498, Unknown=0, NotChecked=0, Total=756
[2022-11-21 17:12:48,981 INFO  L413           NwaCegarLoop]: 48 mSDtfsCounter, 1151 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:48,981 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 202 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-21 17:12:48,982 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2022-11-21 17:12:48,985 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 81.
[2022-11-21 17:12:48,985 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 76 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:48,986 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions.
[2022-11-21 17:12:48,986 INFO  L78                 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 36
[2022-11-21 17:12:48,986 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:48,986 INFO  L495      AbstractCegarLoop]: Abstraction has 81 states and 90 transitions.
[2022-11-21 17:12:48,986 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2022-11-21 17:12:48,986 INFO  L276                IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions.
[2022-11-21 17:12:48,987 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-11-21 17:12:48,987 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:48,993 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:49,007 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-11-21 17:12:49,198 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2022-11-21 17:12:49,199 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:49,199 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:49,199 INFO  L85        PathProgramCache]: Analyzing trace with hash -296648915, now seen corresponding path program 1 times
[2022-11-21 17:12:49,199 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:49,199 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174346742]
[2022-11-21 17:12:49,200 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:49,200 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:49,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:49,320 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:49,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:49,324 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:12:49,341 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:49,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2022-11-21 17:12:49,345 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:49,345 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174346742]
[2022-11-21 17:12:49,346 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174346742] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:12:49,346 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:12:49,346 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-11-21 17:12:49,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685221396]
[2022-11-21 17:12:49,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:12:49,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-11-21 17:12:49,347 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:49,347 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-11-21 17:12:49,347 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2022-11-21 17:12:49,348 INFO  L87              Difference]: Start difference. First operand 81 states and 90 transitions. Second operand  has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:49,605 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:49,605 INFO  L93              Difference]: Finished difference Result 159 states and 176 transitions.
[2022-11-21 17:12:49,606 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-11-21 17:12:49,606 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39
[2022-11-21 17:12:49,606 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:49,607 INFO  L225             Difference]: With dead ends: 159
[2022-11-21 17:12:49,607 INFO  L226             Difference]: Without dead ends: 159
[2022-11-21 17:12:49,607 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210
[2022-11-21 17:12:49,608 INFO  L413           NwaCegarLoop]: 56 mSDtfsCounter, 471 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:49,608 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 264 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-21 17:12:49,608 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2022-11-21 17:12:49,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 86.
[2022-11-21 17:12:49,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 81 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:49,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions.
[2022-11-21 17:12:49,617 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 39
[2022-11-21 17:12:49,618 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:49,618 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 98 transitions.
[2022-11-21 17:12:49,618 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:49,618 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions.
[2022-11-21 17:12:49,619 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2022-11-21 17:12:49,621 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:49,621 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:49,622 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-21 17:12:49,622 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:49,622 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:49,622 INFO  L85        PathProgramCache]: Analyzing trace with hash -296648914, now seen corresponding path program 1 times
[2022-11-21 17:12:49,622 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:49,623 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271332243]
[2022-11-21 17:12:49,623 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:49,623 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:49,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:49,884 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:49,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:49,888 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:12:49,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:49,899 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-21 17:12:49,899 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:49,900 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271332243]
[2022-11-21 17:12:49,900 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271332243] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:12:49,900 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:12:49,900 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-11-21 17:12:49,900 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150134262]
[2022-11-21 17:12:49,900 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:12:49,901 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-11-21 17:12:49,902 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:49,902 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-11-21 17:12:49,902 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2022-11-21 17:12:49,903 INFO  L87              Difference]: Start difference. First operand 86 states and 98 transitions. Second operand  has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:50,223 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:50,223 INFO  L93              Difference]: Finished difference Result 149 states and 164 transitions.
[2022-11-21 17:12:50,223 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-11-21 17:12:50,224 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39
[2022-11-21 17:12:50,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:50,224 INFO  L225             Difference]: With dead ends: 149
[2022-11-21 17:12:50,225 INFO  L226             Difference]: Without dead ends: 149
[2022-11-21 17:12:50,225 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210
[2022-11-21 17:12:50,225 INFO  L413           NwaCegarLoop]: 59 mSDtfsCounter, 498 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:50,226 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 248 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-21 17:12:50,226 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2022-11-21 17:12:50,228 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 86.
[2022-11-21 17:12:50,229 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 63 states have (on average 1.4444444444444444) internal successors, (91), 81 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:50,230 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions.
[2022-11-21 17:12:50,230 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 39
[2022-11-21 17:12:50,230 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:50,230 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 97 transitions.
[2022-11-21 17:12:50,230 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:50,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions.
[2022-11-21 17:12:50,231 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-11-21 17:12:50,232 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:50,232 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:50,232 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-11-21 17:12:50,232 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:50,233 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:50,233 INFO  L85        PathProgramCache]: Analyzing trace with hash 1573341240, now seen corresponding path program 1 times
[2022-11-21 17:12:50,233 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:50,233 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717376211]
[2022-11-21 17:12:50,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:50,233 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:50,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:50,334 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:50,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:50,338 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:12:50,340 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:50,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2022-11-21 17:12:50,344 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:50,344 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717376211]
[2022-11-21 17:12:50,345 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717376211] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-21 17:12:50,345 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-21 17:12:50,345 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2022-11-21 17:12:50,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333942618]
[2022-11-21 17:12:50,345 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-21 17:12:50,346 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-11-21 17:12:50,346 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:50,346 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-11-21 17:12:50,346 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2022-11-21 17:12:50,346 INFO  L87              Difference]: Start difference. First operand 86 states and 97 transitions. Second operand  has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:50,507 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:50,507 INFO  L93              Difference]: Finished difference Result 128 states and 142 transitions.
[2022-11-21 17:12:50,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-11-21 17:12:50,507 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42
[2022-11-21 17:12:50,508 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:50,508 INFO  L225             Difference]: With dead ends: 128
[2022-11-21 17:12:50,508 INFO  L226             Difference]: Without dead ends: 128
[2022-11-21 17:12:50,509 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156
[2022-11-21 17:12:50,509 INFO  L413           NwaCegarLoop]: 70 mSDtfsCounter, 396 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:50,510 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 318 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-21 17:12:50,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2022-11-21 17:12:50,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 86.
[2022-11-21 17:12:50,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 86 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 81 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:50,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions.
[2022-11-21 17:12:50,513 INFO  L78                 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 42
[2022-11-21 17:12:50,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:50,514 INFO  L495      AbstractCegarLoop]: Abstraction has 86 states and 96 transitions.
[2022-11-21 17:12:50,514 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2022-11-21 17:12:50,514 INFO  L276                IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions.
[2022-11-21 17:12:50,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-11-21 17:12:50,514 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:50,515 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:50,515 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-11-21 17:12:50,515 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:50,516 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:50,516 INFO  L85        PathProgramCache]: Analyzing trace with hash 1574973534, now seen corresponding path program 1 times
[2022-11-21 17:12:50,516 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:50,516 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007466742]
[2022-11-21 17:12:50,517 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:50,517 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:50,531 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:50,879 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:50,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:50,882 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:12:50,884 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:50,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-21 17:12:50,888 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:50,888 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007466742]
[2022-11-21 17:12:50,888 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007466742] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:12:50,888 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805290952]
[2022-11-21 17:12:50,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:50,889 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:50,889 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:12:50,890 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:12:50,917 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-11-21 17:12:51,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:51,007 INFO  L263         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 43 conjunts are in the unsatisfiable core
[2022-11-21 17:12:51,010 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:12:51,014 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2022-11-21 17:12:51,041 INFO  L321             Elim1Store]: treesize reduction 18, result has 35.7 percent of original size
[2022-11-21 17:12:51,042 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21
[2022-11-21 17:12:51,076 INFO  L350             Elim1Store]: Elim1 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
[2022-11-21 17:12:51,388 INFO  L350             Elim1Store]: Elim1 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 15 treesize of output 7
[2022-11-21 17:12:51,520 INFO  L321             Elim1Store]: treesize reduction 3, result has 75.0 percent of original size
[2022-11-21 17:12:51,521 INFO  L350             Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25
[2022-11-21 17:12:51,530 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:12:51,530 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-11-21 17:12:51,563 INFO  L350             Elim1Store]: Elim1 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 26 treesize of output 18
[2022-11-21 17:12:51,740 INFO  L321             Elim1Store]: treesize reduction 11, result has 64.5 percent of original size
[2022-11-21 17:12:51,741 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 107
[2022-11-21 17:12:51,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-21 17:12:51,942 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [805290952] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-21 17:12:51,942 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-21 17:12:51,942 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 25
[2022-11-21 17:12:51,943 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963053631]
[2022-11-21 17:12:51,943 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-21 17:12:51,943 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 26 states
[2022-11-21 17:12:51,944 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:51,944 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2022-11-21 17:12:51,944 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650
[2022-11-21 17:12:51,945 INFO  L87              Difference]: Start difference. First operand 86 states and 96 transitions. Second operand  has 26 states, 25 states have (on average 2.6) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:53,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:12:53,277 INFO  L93              Difference]: Finished difference Result 178 states and 197 transitions.
[2022-11-21 17:12:53,278 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2022-11-21 17:12:53,278 INFO  L78                 Accepts]: Start accepts. Automaton has  has 26 states, 25 states have (on average 2.6) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42
[2022-11-21 17:12:53,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:12:53,279 INFO  L225             Difference]: With dead ends: 178
[2022-11-21 17:12:53,279 INFO  L226             Difference]: Without dead ends: 178
[2022-11-21 17:12:53,280 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=400, Invalid=1406, Unknown=0, NotChecked=0, Total=1806
[2022-11-21 17:12:53,280 INFO  L413           NwaCegarLoop]: 64 mSDtfsCounter, 1273 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2022-11-21 17:12:53,281 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 924 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2022-11-21 17:12:53,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 178 states.
[2022-11-21 17:12:53,283 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 97.
[2022-11-21 17:12:53,284 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 91 states have internal predecessors, (103), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4)
[2022-11-21 17:12:53,284 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions.
[2022-11-21 17:12:53,284 INFO  L78                 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 42
[2022-11-21 17:12:53,285 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:12:53,285 INFO  L495      AbstractCegarLoop]: Abstraction has 97 states and 111 transitions.
[2022-11-21 17:12:53,285 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 26 states, 25 states have (on average 2.6) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:12:53,285 INFO  L276                IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions.
[2022-11-21 17:12:53,286 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2022-11-21 17:12:53,286 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:12:53,286 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:12:53,292 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-11-21 17:12:53,492 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2022-11-21 17:12:53,492 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:12:53,492 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:12:53,492 INFO  L85        PathProgramCache]: Analyzing trace with hash 1574973535, now seen corresponding path program 1 times
[2022-11-21 17:12:53,493 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:12:53,493 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678359244]
[2022-11-21 17:12:53,493 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:53,493 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:12:53,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:53,987 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:12:53,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:53,990 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:12:53,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:53,997 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-21 17:12:53,998 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:12:53,998 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678359244]
[2022-11-21 17:12:53,998 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678359244] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:12:53,998 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668636484]
[2022-11-21 17:12:53,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:12:53,999 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:12:53,999 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:12:54,004 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:12:54,027 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-11-21 17:12:54,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:12:54,110 INFO  L263         TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 47 conjunts are in the unsatisfiable core
[2022-11-21 17:12:54,114 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:12:54,122 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2022-11-21 17:12:54,250 INFO  L321             Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2022-11-21 17:12:54,251 INFO  L350             Elim1Store]: Elim1 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 11 treesize of output 11
[2022-11-21 17:12:54,258 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 16
[2022-11-21 17:12:54,315 INFO  L350             Elim1Store]: Elim1 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 11 treesize of output 7
[2022-11-21 17:12:54,321 INFO  L350             Elim1Store]: Elim1 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
[2022-11-21 17:12:54,900 INFO  L321             Elim1Store]: treesize reduction 20, result has 39.4 percent of original size
[2022-11-21 17:12:54,901 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 54
[2022-11-21 17:12:54,911 INFO  L173   IndexEqualityManager]: detected equality via solver
[2022-11-21 17:12:54,912 INFO  L350             Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2022-11-21 17:12:55,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:12:55,046 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-11-21 17:12:55,587 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668636484] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:12:55,588 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-21 17:12:55,588 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26
[2022-11-21 17:12:55,588 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124874658]
[2022-11-21 17:12:55,588 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-21 17:12:55,589 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-11-21 17:12:55,589 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:12:55,589 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-11-21 17:12:55,590 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=915, Unknown=0, NotChecked=0, Total=992
[2022-11-21 17:12:55,590 INFO  L87              Difference]: Start difference. First operand 97 states and 111 transitions. Second operand  has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 27 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:13:00,157 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:13:00,157 INFO  L93              Difference]: Finished difference Result 206 states and 225 transitions.
[2022-11-21 17:13:00,157 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2022-11-21 17:13:00,158 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 27 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42
[2022-11-21 17:13:00,158 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:13:00,159 INFO  L225             Difference]: With dead ends: 206
[2022-11-21 17:13:00,159 INFO  L226             Difference]: Without dead ends: 206
[2022-11-21 17:13:00,160 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=520, Invalid=2236, Unknown=0, NotChecked=0, Total=2756
[2022-11-21 17:13:00,161 INFO  L413           NwaCegarLoop]: 58 mSDtfsCounter, 1900 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-11-21 17:13:00,161 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 1002 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2022-11-21 17:13:00,162 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 206 states.
[2022-11-21 17:13:00,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 97.
[2022-11-21 17:13:00,164 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 91 states have internal predecessors, (102), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4)
[2022-11-21 17:13:00,165 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions.
[2022-11-21 17:13:00,165 INFO  L78                 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 42
[2022-11-21 17:13:00,165 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:13:00,166 INFO  L495      AbstractCegarLoop]: Abstraction has 97 states and 110 transitions.
[2022-11-21 17:13:00,166 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 27 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:13:00,166 INFO  L276                IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions.
[2022-11-21 17:13:00,167 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2022-11-21 17:13:00,167 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:13:00,167 INFO  L195           NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:13:00,183 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-11-21 17:13:00,373 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:13:00,373 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:13:00,374 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:13:00,374 INFO  L85        PathProgramCache]: Analyzing trace with hash 1812282727, now seen corresponding path program 1 times
[2022-11-21 17:13:00,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:13:00,374 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21765860]
[2022-11-21 17:13:00,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:13:00,374 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:13:00,392 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:13:00,649 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:13:00,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:13:00,652 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:13:00,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:13:00,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-21 17:13:00,658 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:13:00,659 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21765860]
[2022-11-21 17:13:00,659 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21765860] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:13:00,659 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924110655]
[2022-11-21 17:13:00,659 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:13:00,659 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:13:00,659 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:13:00,660 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:13:00,667 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-11-21 17:13:00,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:13:00,780 INFO  L263         TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 39 conjunts are in the unsatisfiable core
[2022-11-21 17:13:00,787 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:13:00,825 INFO  L350             Elim1Store]: Elim1 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
[2022-11-21 17:13:01,042 INFO  L350             Elim1Store]: Elim1 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 15 treesize of output 7
[2022-11-21 17:13:01,163 INFO  L321             Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2022-11-21 17:13:01,164 INFO  L350             Elim1Store]: Elim1 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23
[2022-11-21 17:13:01,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:13:01,170 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-11-21 17:13:01,197 INFO  L350             Elim1Store]: Elim1 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 17
[2022-11-21 17:13:01,347 INFO  L321             Elim1Store]: treesize reduction 11, result has 64.5 percent of original size
[2022-11-21 17:13:01,348 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 132
[2022-11-21 17:13:01,419 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-21 17:13:01,420 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924110655] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-21 17:13:01,420 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-21 17:13:01,420 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 23
[2022-11-21 17:13:01,420 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329063198]
[2022-11-21 17:13:01,420 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-21 17:13:01,421 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-11-21 17:13:01,421 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-21 17:13:01,421 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-11-21 17:13:01,422 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506
[2022-11-21 17:13:01,422 INFO  L87              Difference]: Start difference. First operand 97 states and 110 transitions. Second operand  has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:13:02,153 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-21 17:13:02,154 INFO  L93              Difference]: Finished difference Result 149 states and 164 transitions.
[2022-11-21 17:13:02,154 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2022-11-21 17:13:02,154 INFO  L78                 Accepts]: Start accepts. Automaton has  has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45
[2022-11-21 17:13:02,154 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-21 17:13:02,155 INFO  L225             Difference]: With dead ends: 149
[2022-11-21 17:13:02,155 INFO  L226             Difference]: Without dead ends: 149
[2022-11-21 17:13:02,156 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=364, Invalid=1042, Unknown=0, NotChecked=0, Total=1406
[2022-11-21 17:13:02,157 INFO  L413           NwaCegarLoop]: 80 mSDtfsCounter, 901 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-11-21 17:13:02,157 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 800 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-11-21 17:13:02,157 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 149 states.
[2022-11-21 17:13:02,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 97.
[2022-11-21 17:13:02,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 91 states have internal predecessors, (101), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4)
[2022-11-21 17:13:02,161 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions.
[2022-11-21 17:13:02,161 INFO  L78                 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 45
[2022-11-21 17:13:02,161 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-11-21 17:13:02,162 INFO  L495      AbstractCegarLoop]: Abstraction has 97 states and 109 transitions.
[2022-11-21 17:13:02,162 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2022-11-21 17:13:02,162 INFO  L276                IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions.
[2022-11-21 17:13:02,163 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2022-11-21 17:13:02,163 INFO  L187           NwaCegarLoop]: Found error trace
[2022-11-21 17:13:02,163 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-21 17:13:02,176 INFO  L552       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2022-11-21 17:13:02,368 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2022-11-21 17:13:02,368 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] ===
[2022-11-21 17:13:02,369 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-11-21 17:13:02,369 INFO  L85        PathProgramCache]: Analyzing trace with hash 1813915021, now seen corresponding path program 2 times
[2022-11-21 17:13:02,369 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-21 17:13:02,369 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638942312]
[2022-11-21 17:13:02,369 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-21 17:13:02,369 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-21 17:13:02,388 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:13:03,073 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2022-11-21 17:13:03,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:13:03,076 INFO  L376   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25
[2022-11-21 17:13:03,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-21 17:13:03,082 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2022-11-21 17:13:03,083 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-21 17:13:03,083 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638942312]
[2022-11-21 17:13:03,083 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638942312] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-21 17:13:03,083 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774684963]
[2022-11-21 17:13:03,083 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-21 17:13:03,084 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-21 17:13:03,084 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3
[2022-11-21 17:13:03,085 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-21 17:13:03,107 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a8ca76c-3e9d-4edf-88e2-c7ecf4952eb0/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-11-21 17:13:03,200 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-21 17:13:03,201 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-21 17:13:03,203 INFO  L263         TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 74 conjunts are in the unsatisfiable core
[2022-11-21 17:13:03,206 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-11-21 17:13:03,221 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5
[2022-11-21 17:13:03,265 INFO  L350             Elim1Store]: Elim1 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 11 treesize of output 7
[2022-11-21 17:13:03,272 INFO  L350             Elim1Store]: Elim1 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 11 treesize of output 7
[2022-11-21 17:13:03,360 INFO  L321             Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2022-11-21 17:13:03,361 INFO  L350             Elim1Store]: Elim1 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 11 treesize of output 11
[2022-11-21 17:13:03,430 INFO  L350             Elim1Store]: Elim1 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 19 treesize of output 18
[2022-11-21 17:13:03,435 INFO  L350             Elim1Store]: Elim1 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
[2022-11-21 17:13:04,459 INFO  L321             Elim1Store]: treesize reduction 80, result has 28.6 percent of original size
[2022-11-21 17:13:04,460 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 91
[2022-11-21 17:13:04,498 INFO  L321             Elim1Store]: treesize reduction 58, result has 10.8 percent of original size
[2022-11-21 17:13:04,499 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 46
[2022-11-21 17:13:04,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-21 17:13:04,517 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-11-21 17:13:05,682 INFO  L190   IndexEqualityManager]: detected not equals via solver
[2022-11-21 17:13:05,766 INFO  L321             Elim1Store]: treesize reduction 39, result has 72.5 percent of original size
[2022-11-21 17:13:05,766 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 7820 treesize of output 7278
[2022-11-21 17:13:40,355 WARN  L233               SmtUtils]: Spent 34.15s on a formula simplification. DAG size of input: 2487 DAG size of output: 917 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1)
[2022-11-21 17:13:40,371 INFO  L321             Elim1Store]: treesize reduction 5738, result has 28.2 percent of original size
[2022-11-21 17:13:40,375 INFO  L350             Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 40 select indices, 40 select index equivalence classes, 0 disjoint index pairs (out of 780 index pairs), introduced 49 new quantified variables, introduced 780 case distinctions, treesize of input 382206 treesize of output 307416
[2022-11-21 17:14:15,373 WARN  L233               SmtUtils]: Spent 34.99s on a formula simplification. DAG size of input: 2389 DAG size of output: 2353 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2022-11-21 17:21:34,799 WARN  L233               SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 1421 DAG size of output: 1421 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)