./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 38b53e6a
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811
--- 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-38b53e6
[2022-11-25 18:00:46,566 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-25 18:00:46,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-25 18:00:46,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-25 18:00:46,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-25 18:00:46,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-25 18:00:46,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-25 18:00:46,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-25 18:00:46,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-25 18:00:46,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-25 18:00:46,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-25 18:00:46,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-25 18:00:46,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-25 18:00:46,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-25 18:00:46,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-25 18:00:46,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-25 18:00:46,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-25 18:00:46,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-25 18:00:46,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-25 18:00:46,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-25 18:00:46,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-25 18:00:46,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-25 18:00:46,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-25 18:00:46,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-25 18:00:46,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-25 18:00:46,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-25 18:00:46,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-25 18:00:46,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-25 18:00:46,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-25 18:00:46,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-25 18:00:46,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-25 18:00:46,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-25 18:00:46,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-25 18:00:46,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-25 18:00:46,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-25 18:00:46,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-25 18:00:46,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-25 18:00:46,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-25 18:00:46,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-25 18:00:46,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-25 18:00:46,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-25 18:00:46,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-25 18:00:46,656 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-25 18:00:46,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-25 18:00:46,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-25 18:00:46,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-25 18:00:46,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-25 18:00:46,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-25 18:00:46,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-25 18:00:46,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-25 18:00:46,659 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-25 18:00:46,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-25 18:00:46,660 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-25 18:00:46,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-25 18:00:46,660 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-25 18:00:46,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-25 18:00:46,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-25 18:00:46,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-25 18:00:46,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-25 18:00:46,661 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-25 18:00:46,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-25 18:00:46,662 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-25 18:00:46,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-25 18:00:46,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-25 18:00:46,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-25 18:00:46,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-25 18:00:46,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 18:00:46,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-25 18:00:46,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-25 18:00:46,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-25 18:00:46,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-25 18:00:46,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-25 18:00:46,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-25 18:00:46,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-25 18:00:46,665 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2022-11-25 18:00:46,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2022-11-25 18:00:46,665 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a077c1334c11d8329da2d0c58ca917b2036581fa7e949d1d304e3346ec54a811
[2022-11-25 18:00:46,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-25 18:00:46,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-25 18:00:46,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-25 18:00:46,986 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-25 18:00:46,987 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-25 18:00:46,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c
[2022-11-25 18:00:50,001 INFO L500 CDTParser]: Created temporary CDT project at NULL
[2022-11-25 18:00:50,226 INFO L351 CDTParser]: Found 1 translation units.
[2022-11-25 18:00:50,226 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c
[2022-11-25 18:00:50,241 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/data/714fd75ff/85969e5dfede4925a639ea10669ec5ed/FLAG696b42ace
[2022-11-25 18:00:50,256 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/data/714fd75ff/85969e5dfede4925a639ea10669ec5ed
[2022-11-25 18:00:50,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-25 18:00:50,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-25 18:00:50,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-25 18:00:50,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-25 18:00:50,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-25 18:00:50,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5366d63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50, skipping insertion in model container
[2022-11-25 18:00:50,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-25 18:00:50,291 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-25 18:00:50,495 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_81fea8de-d417-4f69-b2f5-9d9a42b31f18/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c[526,539]
[2022-11-25 18:00:50,521 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-25 18:00:50,538 INFO L203 MainTranslator]: Completed pre-run
[2022-11-25 18:00:50,559 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_81fea8de-d417-4f69-b2f5-9d9a42b31f18/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound5.c[526,539]
[2022-11-25 18:00:50,572 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-25 18:00:50,588 INFO L208 MainTranslator]: Completed translation
[2022-11-25 18:00:50,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50 WrapperNode
[2022-11-25 18:00:50,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-25 18:00:50,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-25 18:00:50,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-25 18:00:50,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-25 18:00:50,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,634 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64
[2022-11-25 18:00:50,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-25 18:00:50,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-25 18:00:50,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-25 18:00:50,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-25 18:00:50,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,664 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-25 18:00:50,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-25 18:00:50,676 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-25 18:00:50,676 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-25 18:00:50,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (1/1) ...
[2022-11-25 18:00:50,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-25 18:00:50,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:00:50,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-25 18:00:50,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-25 18:00:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-25 18:00:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-25 18:00:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-25 18:00:50,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-25 18:00:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2022-11-25 18:00:50,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2022-11-25 18:00:50,837 INFO L235 CfgBuilder]: Building ICFG
[2022-11-25 18:00:50,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-25 18:00:51,010 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-25 18:00:51,017 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-25 18:00:51,017 INFO L300 CfgBuilder]: Removed 2 assume(true) statements.
[2022-11-25 18:00:51,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:51 BoogieIcfgContainer
[2022-11-25 18:00:51,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-25 18:00:51,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-25 18:00:51,022 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-25 18:00:51,025 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-25 18:00:51,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:00:50" (1/3) ...
[2022-11-25 18:00:51,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af95fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:51, skipping insertion in model container
[2022-11-25 18:00:51,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:00:50" (2/3) ...
[2022-11-25 18:00:51,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af95fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:00:51, skipping insertion in model container
[2022-11-25 18:00:51,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:51" (3/3) ...
[2022-11-25 18:00:51,029 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound5.c
[2022-11-25 18:00:51,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-25 18:00:51,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-25 18:00:51,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-25 18:00:51,125 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@451584ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-25 18:00:51,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-25 18:00:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7)
[2022-11-25 18:00:51,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-11-25 18:00:51,140 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:00:51,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:00:51,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:00:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:00:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times
[2022-11-25 18:00:51,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:00:51,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54829151]
[2022-11-25 18:00:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:51,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:00:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:00:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 18:00:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:00:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54829151]
[2022-11-25 18:00:51,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54829151] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 18:00:51,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 18:00:51,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-25 18:00:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072403109]
[2022-11-25 18:00:51,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 18:00:51,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-25 18:00:51,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:00:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-25 18:00:51,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-25 18:00:51,433 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 18:00:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:00:51,463 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions.
[2022-11-25 18:00:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-11-25 18:00:51,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2022-11-25 18:00:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:00:51,476 INFO L225 Difference]: With dead ends: 49
[2022-11-25 18:00:51,476 INFO L226 Difference]: Without dead ends: 22
[2022-11-25 18:00:51,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-25 18:00:51,485 INFO L413 NwaCegarLoop]: 34 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, 34 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
[2022-11-25 18:00:51,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-25 18:00:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2022-11-25 18:00:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2022-11-25 18:00:51,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-11-25 18:00:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions.
[2022-11-25 18:00:51,536 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9
[2022-11-25 18:00:51,538 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:00:51,539 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions.
[2022-11-25 18:00:51,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 18:00:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions.
[2022-11-25 18:00:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-11-25 18:00:51,541 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:00:51,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:00:51,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-25 18:00:51,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:00:51,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:00:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times
[2022-11-25 18:00:51,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:00:51,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882941680]
[2022-11-25 18:00:51,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:51,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:00:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:00:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 18:00:51,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:00:51,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882941680]
[2022-11-25 18:00:51,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882941680] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 18:00:51,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 18:00:51,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-25 18:00:51,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642796830]
[2022-11-25 18:00:51,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 18:00:51,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-25 18:00:51,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:00:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-25 18:00:51,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-25 18:00:51,751 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 18:00:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:00:51,814 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions.
[2022-11-25 18:00:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-11-25 18:00:51,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9
[2022-11-25 18:00:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:00:51,816 INFO L225 Difference]: With dead ends: 35
[2022-11-25 18:00:51,816 INFO L226 Difference]: Without dead ends: 33
[2022-11-25 18:00:51,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-11-25 18:00:51,818 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-25 18:00:51,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-25 18:00:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2022-11-25 18:00:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26.
[2022-11-25 18:00:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-11-25 18:00:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions.
[2022-11-25 18:00:51,846 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9
[2022-11-25 18:00:51,846 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:00:51,846 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions.
[2022-11-25 18:00:51,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 18:00:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions.
[2022-11-25 18:00:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-11-25 18:00:51,848 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:00:51,848 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:00:51,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-25 18:00:51,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:00:51,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:00:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times
[2022-11-25 18:00:51,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:00:51,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067577579]
[2022-11-25 18:00:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:51,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:00:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:00:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5
[2022-11-25 18:00:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:00:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-25 18:00:52,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:00:52,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067577579]
[2022-11-25 18:00:52,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067577579] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 18:00:52,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 18:00:52,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-11-25 18:00:52,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036655745]
[2022-11-25 18:00:52,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 18:00:52,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-25 18:00:52,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:00:52,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-25 18:00:52,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-25 18:00:52,089 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-25 18:00:52,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:00:52,182 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions.
[2022-11-25 18:00:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-11-25 18:00:52,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2022-11-25 18:00:52,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:00:52,187 INFO L225 Difference]: With dead ends: 39
[2022-11-25 18:00:52,187 INFO L226 Difference]: Without dead ends: 37
[2022-11-25 18:00:52,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-11-25 18:00:52,189 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-25 18:00:52,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-25 18:00:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2022-11-25 18:00:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30.
[2022-11-25 18:00:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2022-11-25 18:00:52,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions.
[2022-11-25 18:00:52,203 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14
[2022-11-25 18:00:52,204 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:00:52,204 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions.
[2022-11-25 18:00:52,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2022-11-25 18:00:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions.
[2022-11-25 18:00:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-11-25 18:00:52,205 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:00:52,205 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:00:52,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-25 18:00:52,206 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:00:52,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:00:52,207 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times
[2022-11-25 18:00:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:00:52,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106372075]
[2022-11-25 18:00:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:52,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:00:52,222 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:00:52,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134886371]
[2022-11-25 18:00:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:52,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:00:52,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:00:52,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:00:52,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-25 18:00:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:00:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-11-25 18:00:52,298 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:00:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-25 18:00:52,469 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:00:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-25 18:00:52,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:00:52,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106372075]
[2022-11-25 18:00:52,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:00:52,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134886371]
[2022-11-25 18:00:52,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134886371] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:00:52,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:00:52,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12
[2022-11-25 18:00:52,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384157219]
[2022-11-25 18:00:52,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:00:52,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2022-11-25 18:00:52,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:00:52,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2022-11-25 18:00:52,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132
[2022-11-25 18:00:52,673 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4)
[2022-11-25 18:00:53,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:00:53,295 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions.
[2022-11-25 18:00:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-11-25 18:00:53,296 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19
[2022-11-25 18:00:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:00:53,298 INFO L225 Difference]: With dead ends: 65
[2022-11-25 18:00:53,298 INFO L226 Difference]: Without dead ends: 51
[2022-11-25 18:00:53,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182
[2022-11-25 18:00:53,300 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2022-11-25 18:00:53,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 60 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2022-11-25 18:00:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2022-11-25 18:00:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2022-11-25 18:00:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13)
[2022-11-25 18:00:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions.
[2022-11-25 18:00:53,330 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19
[2022-11-25 18:00:53,330 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:00:53,331 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions.
[2022-11-25 18:00:53,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4)
[2022-11-25 18:00:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions.
[2022-11-25 18:00:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2022-11-25 18:00:53,332 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:00:53,332 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:00:53,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-25 18:00:53,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:00:53,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:00:53,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:00:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times
[2022-11-25 18:00:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:00:53,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735554222]
[2022-11-25 18:00:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:00:53,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:00:53,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394497274]
[2022-11-25 18:00:53,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:53,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:00:53,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:00:53,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:00:53,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-25 18:00:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:00:53,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core
[2022-11-25 18:00:53,630 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:00:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-11-25 18:00:53,770 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:00:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2022-11-25 18:00:53,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:00:53,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735554222]
[2022-11-25 18:00:53,944 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:00:53,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394497274]
[2022-11-25 18:00:53,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394497274] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:00:53,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:00:53,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11
[2022-11-25 18:00:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094203978]
[2022-11-25 18:00:53,945 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:00:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-11-25 18:00:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:00:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-11-25 18:00:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2022-11-25 18:00:53,947 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)
[2022-11-25 18:00:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:00:54,148 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions.
[2022-11-25 18:00:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2022-11-25 18:00:54,148 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26
[2022-11-25 18:00:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:00:54,149 INFO L225 Difference]: With dead ends: 66
[2022-11-25 18:00:54,150 INFO L226 Difference]: Without dead ends: 59
[2022-11-25 18:00:54,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2022-11-25 18:00:54,151 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-25 18:00:54,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 80 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-25 18:00:54,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2022-11-25 18:00:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58.
[2022-11-25 18:00:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15)
[2022-11-25 18:00:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions.
[2022-11-25 18:00:54,166 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 26
[2022-11-25 18:00:54,166 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:00:54,166 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions.
[2022-11-25 18:00:54,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)
[2022-11-25 18:00:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions.
[2022-11-25 18:00:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2022-11-25 18:00:54,168 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:00:54,168 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:00:54,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-25 18:00:54,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:00:54,374 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:00:54,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:00:54,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times
[2022-11-25 18:00:54,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:00:54,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571412815]
[2022-11-25 18:00:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:00:54,388 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:00:54,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976568271]
[2022-11-25 18:00:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:00:54,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:00:54,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:00:54,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:00:54,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-25 18:00:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:00:54,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core
[2022-11-25 18:00:54,479 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:00:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked.
[2022-11-25 18:00:54,821 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:00:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked.
[2022-11-25 18:00:56,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:00:56,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571412815]
[2022-11-25 18:00:56,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:00:56,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976568271]
[2022-11-25 18:00:56,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976568271] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:00:56,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:00:56,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15
[2022-11-25 18:00:56,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134753784]
[2022-11-25 18:00:56,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:00:56,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-11-25 18:00:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:00:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-11-25 18:00:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210
[2022-11-25 18:00:56,240 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16)
[2022-11-25 18:00:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:00:59,918 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions.
[2022-11-25 18:00:59,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-11-25 18:00:59,919 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56
[2022-11-25 18:00:59,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:00:59,920 INFO L225 Difference]: With dead ends: 142
[2022-11-25 18:00:59,921 INFO L226 Difference]: Without dead ends: 111
[2022-11-25 18:00:59,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380
[2022-11-25 18:00:59,922 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2022-11-25 18:00:59,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 94 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2022-11-25 18:00:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2022-11-25 18:00:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106.
[2022-11-25 18:00:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.203125) internal successors, (77), 71 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30)
[2022-11-25 18:00:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions.
[2022-11-25 18:00:59,972 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 56
[2022-11-25 18:00:59,973 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:00:59,973 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions.
[2022-11-25 18:00:59,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16)
[2022-11-25 18:00:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions.
[2022-11-25 18:00:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2022-11-25 18:00:59,975 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:00:59,975 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:00:59,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-11-25 18:01:00,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:01:00,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:01:00,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:01:00,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times
[2022-11-25 18:01:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:01:00,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984719219]
[2022-11-25 18:01:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:01:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:01:00,198 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:01:00,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431466605]
[2022-11-25 18:01:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:01:00,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:01:00,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:01:00,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:01:00,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-11-25 18:01:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:01:00,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core
[2022-11-25 18:01:00,302 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:01:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2022-11-25 18:01:00,576 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:01:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked.
[2022-11-25 18:01:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:01:01,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984719219]
[2022-11-25 18:01:01,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:01:01,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431466605]
[2022-11-25 18:01:01,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431466605] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:01:01,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:01:01,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16
[2022-11-25 18:01:01,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051003914]
[2022-11-25 18:01:01,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:01:01,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-11-25 18:01:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:01:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-11-25 18:01:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240
[2022-11-25 18:01:01,173 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20)
[2022-11-25 18:01:02,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:01:02,292 INFO L93 Difference]: Finished difference Result 161 states and 210 transitions.
[2022-11-25 18:01:02,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2022-11-25 18:01:02,293 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67
[2022-11-25 18:01:02,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:01:02,294 INFO L225 Difference]: With dead ends: 161
[2022-11-25 18:01:02,294 INFO L226 Difference]: Without dead ends: 123
[2022-11-25 18:01:02,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380
[2022-11-25 18:01:02,309 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 25 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2022-11-25 18:01:02,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 87 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2022-11-25 18:01:02,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2022-11-25 18:01:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101.
[2022-11-25 18:01:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26)
[2022-11-25 18:01:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions.
[2022-11-25 18:01:02,348 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 67
[2022-11-25 18:01:02,349 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:01:02,349 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions.
[2022-11-25 18:01:02,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20)
[2022-11-25 18:01:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions.
[2022-11-25 18:01:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2022-11-25 18:01:02,351 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:01:02,351 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 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]
[2022-11-25 18:01:02,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2022-11-25 18:01:02,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:01:02,557 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:01:02,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:01:02,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times
[2022-11-25 18:01:02,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:01:02,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955715045]
[2022-11-25 18:01:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:01:02,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:01:02,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:01:02,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800044881]
[2022-11-25 18:01:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:01:02,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:01:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:01:02,580 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:01:02,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-11-25 18:01:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:01:02,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-11-25 18:01:02,663 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:01:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2022-11-25 18:01:02,892 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:01:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2022-11-25 18:01:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:01:03,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955715045]
[2022-11-25 18:01:03,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:01:03,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800044881]
[2022-11-25 18:01:03,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800044881] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:01:03,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:01:03,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16
[2022-11-25 18:01:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793152202]
[2022-11-25 18:01:03,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:01:03,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2022-11-25 18:01:03,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:01:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2022-11-25 18:01:03,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240
[2022-11-25 18:01:03,360 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22)
[2022-11-25 18:01:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:01:03,819 INFO L93 Difference]: Finished difference Result 117 states and 139 transitions.
[2022-11-25 18:01:03,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-11-25 18:01:03,820 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) Word has length 72
[2022-11-25 18:01:03,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:01:03,821 INFO L225 Difference]: With dead ends: 117
[2022-11-25 18:01:03,821 INFO L226 Difference]: Without dead ends: 86
[2022-11-25 18:01:03,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380
[2022-11-25 18:01:03,823 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-11-25 18:01:03,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-11-25 18:01:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2022-11-25 18:01:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86.
[2022-11-25 18:01:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 57 states have internal predecessors, (60), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20)
[2022-11-25 18:01:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions.
[2022-11-25 18:01:03,850 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 72
[2022-11-25 18:01:03,851 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:01:03,851 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions.
[2022-11-25 18:01:03,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22)
[2022-11-25 18:01:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions.
[2022-11-25 18:01:03,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2022-11-25 18:01:03,853 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:01:03,853 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:01:03,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-11-25 18:01:04,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7
[2022-11-25 18:01:04,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:01:04,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:01:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times
[2022-11-25 18:01:04,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:01:04,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835349839]
[2022-11-25 18:01:04,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:01:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:01:04,069 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:01:04,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451175103]
[2022-11-25 18:01:04,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:01:04,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:01:04,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:01:04,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:01:04,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-11-25 18:01:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:01:04,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-11-25 18:01:04,150 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:01:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked.
[2022-11-25 18:01:04,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-25 18:01:04,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:01:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835349839]
[2022-11-25 18:01:04,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:01:04,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451175103]
[2022-11-25 18:01:04,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451175103] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-25 18:01:04,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-25 18:01:04,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-11-25 18:01:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755823668]
[2022-11-25 18:01:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-25 18:01:04,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-11-25 18:01:04,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:01:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-11-25 18:01:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-11-25 18:01:04,328 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13)
[2022-11-25 18:01:04,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:01:04,624 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions.
[2022-11-25 18:01:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-11-25 18:01:04,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86
[2022-11-25 18:01:04,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:01:04,626 INFO L225 Difference]: With dead ends: 116
[2022-11-25 18:01:04,626 INFO L226 Difference]: Without dead ends: 86
[2022-11-25 18:01:04,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-11-25 18:01:04,627 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-11-25 18:01:04,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 95 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-11-25 18:01:04,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2022-11-25 18:01:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78.
[2022-11-25 18:01:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 17 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16)
[2022-11-25 18:01:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions.
[2022-11-25 18:01:04,655 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 86
[2022-11-25 18:01:04,655 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:01:04,656 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions.
[2022-11-25 18:01:04,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13)
[2022-11-25 18:01:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions.
[2022-11-25 18:01:04,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2022-11-25 18:01:04,657 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:01:04,658 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:01:04,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-11-25 18:01:04,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:01:04,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:01:04,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:01:04,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times
[2022-11-25 18:01:04,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:01:04,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50014572]
[2022-11-25 18:01:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:01:04,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:01:04,875 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:01:04,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547062450]
[2022-11-25 18:01:04,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-25 18:01:04,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:01:04,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:01:04,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:01:04,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-11-25 18:01:04,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-25 18:01:04,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-25 18:01:04,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 45 conjunts are in the unsatisfiable core
[2022-11-25 18:01:04,958 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:01:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2022-11-25 18:01:05,473 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:01:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked.
[2022-11-25 18:01:47,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:01:47,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50014572]
[2022-11-25 18:01:47,977 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:01:47,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547062450]
[2022-11-25 18:01:47,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547062450] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:01:47,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:01:47,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21
[2022-11-25 18:01:47,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967752173]
[2022-11-25 18:01:47,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:01:47,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-11-25 18:01:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:01:47,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-11-25 18:01:47,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=336, Unknown=2, NotChecked=0, Total=420
[2022-11-25 18:01:47,980 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26)
[2022-11-25 18:02:27,314 WARN L233 SmtUtils]: Spent 38.13s on a formula simplification. DAG size of input: 166 DAG size of output: 85 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:02:29,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:32,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:35,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:37,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:41,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:42,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:44,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:46,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:51,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:53,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:55,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:02:56,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:02:56,420 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions.
[2022-11-25 18:02:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2022-11-25 18:02:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 86
[2022-11-25 18:02:56,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:02:56,422 INFO L225 Difference]: With dead ends: 154
[2022-11-25 18:02:56,422 INFO L226 Difference]: Without dead ends: 131
[2022-11-25 18:02:56,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 53.3s TimeCoverageRelationStatistics Valid=151, Invalid=549, Unknown=2, NotChecked=0, Total=702
[2022-11-25 18:02:56,423 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 82 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 95 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time
[2022-11-25 18:02:56,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 168 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 765 Invalid, 8 Unknown, 0 Unchecked, 27.0s Time]
[2022-11-25 18:02:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2022-11-25 18:02:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129.
[2022-11-25 18:02:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 80 states have (on average 1.1375) internal successors, (91), 86 states have internal predecessors, (91), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 29 states have call predecessors, (34), 34 states have call successors, (34)
[2022-11-25 18:02:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 160 transitions.
[2022-11-25 18:02:56,494 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 160 transitions. Word has length 86
[2022-11-25 18:02:56,494 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:02:56,495 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 160 transitions.
[2022-11-25 18:02:56,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26)
[2022-11-25 18:02:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 160 transitions.
[2022-11-25 18:02:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2022-11-25 18:02:56,497 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:02:56,497 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:02:56,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2022-11-25 18:02:56,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2022-11-25 18:02:56,703 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:02:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:02:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1474759586, now seen corresponding path program 2 times
[2022-11-25 18:02:56,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:02:56,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902908217]
[2022-11-25 18:02:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:02:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:02:56,712 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:02:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555063575]
[2022-11-25 18:02:56,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-25 18:02:56,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:02:56,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:02:56,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:02:56,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2022-11-25 18:02:56,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-25 18:02:56,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-25 18:02:56,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 48 conjunts are in the unsatisfiable core
[2022-11-25 18:02:56,819 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:02:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2022-11-25 18:02:57,296 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:03:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked.
[2022-11-25 18:03:05,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:03:05,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902908217]
[2022-11-25 18:03:05,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:03:05,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555063575]
[2022-11-25 18:03:05,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555063575] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:03:05,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:03:05,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21
[2022-11-25 18:03:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102857748]
[2022-11-25 18:03:05,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:03:05,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2022-11-25 18:03:05,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:03:05,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2022-11-25 18:03:05,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420
[2022-11-25 18:03:05,856 INFO L87 Difference]: Start difference. First operand 129 states and 160 transitions. Second operand has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30)
[2022-11-25 18:03:18,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:03:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:03:24,407 INFO L93 Difference]: Finished difference Result 184 states and 231 transitions.
[2022-11-25 18:03:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2022-11-25 18:03:24,408 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 97
[2022-11-25 18:03:24,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:03:24,409 INFO L225 Difference]: With dead ends: 184
[2022-11-25 18:03:24,409 INFO L226 Difference]: Without dead ends: 116
[2022-11-25 18:03:24,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812
[2022-11-25 18:03:24,411 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time
[2022-11-25 18:03:24,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 145 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time]
[2022-11-25 18:03:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2022-11-25 18:03:24,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102.
[2022-11-25 18:03:24,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 68 states have internal predecessors, (70), 23 states have call successors, (23), 13 states have call predecessors, (23), 13 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22)
[2022-11-25 18:03:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions.
[2022-11-25 18:03:24,455 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 97
[2022-11-25 18:03:24,456 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:03:24,456 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions.
[2022-11-25 18:03:24,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 states have internal predecessors, (46), 12 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30)
[2022-11-25 18:03:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions.
[2022-11-25 18:03:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2022-11-25 18:03:24,458 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:03:24,458 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:03:24,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2022-11-25 18:03:24,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2022-11-25 18:03:24,664 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:03:24,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:03:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash 289773103, now seen corresponding path program 2 times
[2022-11-25 18:03:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:03:24,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045827629]
[2022-11-25 18:03:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:03:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:03:24,688 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:03:24,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88437065]
[2022-11-25 18:03:24,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-25 18:03:24,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:03:24,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:03:24,690 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:03:24,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2022-11-25 18:03:24,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-25 18:03:24,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-25 18:03:24,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 55 conjunts are in the unsatisfiable core
[2022-11-25 18:03:24,777 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:03:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked.
[2022-11-25 18:03:25,480 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:04:57,851 WARN L233 SmtUtils]: Spent 21.57s on a formula simplification that was a NOOP. DAG size: 375 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:08:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 38 proven. 100 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked.
[2022-11-25 18:08:31,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:08:31,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045827629]
[2022-11-25 18:08:31,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:08:31,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88437065]
[2022-11-25 18:08:31,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88437065] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:08:31,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:08:31,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29
[2022-11-25 18:08:31,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226434417]
[2022-11-25 18:08:31,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:08:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states
[2022-11-25 18:08:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:08:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2022-11-25 18:08:31,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=642, Unknown=1, NotChecked=0, Total=812
[2022-11-25 18:08:31,194 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 27 states have internal predecessors, (54), 15 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 13 states have call predecessors, (36), 13 states have call successors, (36)
[2022-11-25 18:09:27,964 WARN L233 SmtUtils]: Spent 54.16s on a formula simplification. DAG size of input: 574 DAG size of output: 136 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:09:31,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:10:33,193 WARN L233 SmtUtils]: Spent 58.36s on a formula simplification. DAG size of input: 543 DAG size of output: 162 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:10:59,920 WARN L233 SmtUtils]: Spent 22.08s on a formula simplification. DAG size of input: 184 DAG size of output: 125 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:12:21,286 WARN L233 SmtUtils]: Spent 1.30m on a formula simplification. DAG size of input: 141 DAG size of output: 112 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:12:43,053 WARN L233 SmtUtils]: Spent 16.40s on a formula simplification. DAG size of input: 181 DAG size of output: 85 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:12:45,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:12:48,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:12:51,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:12:53,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:12:55,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:12:57,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:06,763 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification that was a NOOP. DAG size: 121 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:13:11,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:25,495 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 99 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:13:36,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:37,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:39,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:41,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:44,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:46,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:48,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:13:57,954 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 124 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:14:00,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:14:03,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:14:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:14:04,492 INFO L93 Difference]: Finished difference Result 214 states and 277 transitions.
[2022-11-25 18:14:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2022-11-25 18:14:04,493 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 27 states have internal predecessors, (54), 15 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 13 states have call predecessors, (36), 13 states have call successors, (36) Word has length 116
[2022-11-25 18:14:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:14:04,494 INFO L225 Difference]: With dead ends: 214
[2022-11-25 18:14:04,495 INFO L226 Difference]: Without dead ends: 191
[2022-11-25 18:14:04,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 314.6s TimeCoverageRelationStatistics Valid=467, Invalid=1421, Unknown=4, NotChecked=0, Total=1892
[2022-11-25 18:14:04,499 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 136 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 289 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.6s IncrementalHoareTripleChecker+Time
[2022-11-25 18:14:04,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 196 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1109 Invalid, 9 Unknown, 0 Unchecked, 50.6s Time]
[2022-11-25 18:14:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states.
[2022-11-25 18:14:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 174.
[2022-11-25 18:14:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 113 states have internal predecessors, (122), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 43 states have call predecessors, (48), 48 states have call successors, (48)
[2022-11-25 18:14:04,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 219 transitions.
[2022-11-25 18:14:04,628 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 219 transitions. Word has length 116
[2022-11-25 18:14:04,628 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:14:04,628 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 219 transitions.
[2022-11-25 18:14:04,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.8620689655172413) internal successors, (54), 27 states have internal predecessors, (54), 15 states have call successors, (38), 3 states have call predecessors, (38), 2 states have return successors, (36), 13 states have call predecessors, (36), 13 states have call successors, (36)
[2022-11-25 18:14:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 219 transitions.
[2022-11-25 18:14:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2022-11-25 18:14:04,630 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:14:04,630 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:14:04,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2022-11-25 18:14:04,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2022-11-25 18:14:04,835 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:14:04,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:14:04,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1262824565, now seen corresponding path program 1 times
[2022-11-25 18:14:04,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:14:04,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397107671]
[2022-11-25 18:14:04,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:14:04,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:14:04,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:14:04,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [197653450]
[2022-11-25 18:14:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:14:04,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:14:04,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:14:04,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:14:04,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2022-11-25 18:14:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-25 18:14:04,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 64 conjunts are in the unsatisfiable core
[2022-11-25 18:14:04,943 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:14:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 95 proven. 110 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked.
[2022-11-25 18:14:06,017 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:14:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 95 proven. 110 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked.
[2022-11-25 18:14:09,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:14:09,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397107671]
[2022-11-25 18:14:09,594 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:14:09,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197653450]
[2022-11-25 18:14:09,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197653450] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-25 18:14:09,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2022-11-25 18:14:09,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32
[2022-11-25 18:14:09,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635376026]
[2022-11-25 18:14:09,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:14:09,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-11-25 18:14:09,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:14:09,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-11-25 18:14:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992
[2022-11-25 18:14:09,597 INFO L87 Difference]: Start difference. First operand 174 states and 219 transitions. Second operand has 32 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 28 states have internal predecessors, (56), 17 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 17 states have call predecessors, (40), 15 states have call successors, (40)
[2022-11-25 18:14:17,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2022-11-25 18:14:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:14:19,011 INFO L93 Difference]: Finished difference Result 254 states and 321 transitions.
[2022-11-25 18:14:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-11-25 18:14:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 28 states have internal predecessors, (56), 17 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 17 states have call predecessors, (40), 15 states have call successors, (40) Word has length 127
[2022-11-25 18:14:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:14:19,013 INFO L225 Difference]: With dead ends: 254
[2022-11-25 18:14:19,014 INFO L226 Difference]: Without dead ends: 181
[2022-11-25 18:14:19,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892
[2022-11-25 18:14:19,016 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 54 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time
[2022-11-25 18:14:19,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 168 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time]
[2022-11-25 18:14:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states.
[2022-11-25 18:14:19,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 167.
[2022-11-25 18:14:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 105 states have (on average 1.0761904761904761) internal successors, (113), 111 states have internal predecessors, (113), 41 states have call successors, (41), 20 states have call predecessors, (41), 20 states have return successors, (41), 35 states have call predecessors, (41), 41 states have call successors, (41)
[2022-11-25 18:14:19,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 195 transitions.
[2022-11-25 18:14:19,141 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 195 transitions. Word has length 127
[2022-11-25 18:14:19,141 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:14:19,141 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 195 transitions.
[2022-11-25 18:14:19,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 28 states have internal predecessors, (56), 17 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (40), 17 states have call predecessors, (40), 15 states have call successors, (40)
[2022-11-25 18:14:19,142 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 195 transitions.
[2022-11-25 18:14:19,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2022-11-25 18:14:19,143 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-25 18:14:19,144 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:14:19,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2022-11-25 18:14:19,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2022-11-25 18:14:19,355 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-25 18:14:19,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-25 18:14:19,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1395307885, now seen corresponding path program 3 times
[2022-11-25 18:14:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-25 18:14:19,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454691741]
[2022-11-25 18:14:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-25 18:14:19,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-25 18:14:19,365 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2022-11-25 18:14:19,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490718127]
[2022-11-25 18:14:19,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-25 18:14:19,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-25 18:14:19,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3
[2022-11-25 18:14:19,367 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-25 18:14:19,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2022-11-25 18:14:19,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2022-11-25 18:14:19,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-25 18:14:19,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 29 conjunts are in the unsatisfiable core
[2022-11-25 18:14:19,451 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-25 18:14:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked.
[2022-11-25 18:14:19,976 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-25 18:14:31,143 WARN L233 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 86 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2022-11-25 18:14:31,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-25 18:14:31,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454691741]
[2022-11-25 18:14:31,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2022-11-25 18:14:31,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490718127]
[2022-11-25 18:14:31,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490718127] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-25 18:14:31,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences.
[2022-11-25 18:14:31,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2022-11-25 18:14:31,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064605967]
[2022-11-25 18:14:31,148 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton
[2022-11-25 18:14:31,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-11-25 18:14:31,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-25 18:14:31,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-11-25 18:14:31,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182
[2022-11-25 18:14:31,150 INFO L87 Difference]: Start difference. First operand 167 states and 195 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7)
[2022-11-25 18:14:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-25 18:14:31,399 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions.
[2022-11-25 18:14:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2022-11-25 18:14:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129
[2022-11-25 18:14:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-25 18:14:31,400 INFO L225 Difference]: With dead ends: 167
[2022-11-25 18:14:31,401 INFO L226 Difference]: Without dead ends: 0
[2022-11-25 18:14:31,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240
[2022-11-25 18:14:31,402 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-25 18:14:31,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 50 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-25 18:14:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-11-25 18:14:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-11-25 18:14:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-25 18:14:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-11-25 18:14:31,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129
[2022-11-25 18:14:31,403 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-25 18:14:31,403 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-11-25 18:14:31,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7)
[2022-11-25 18:14:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-11-25 18:14:31,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-11-25 18:14:31,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-11-25 18:14:31,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2022-11-25 18:14:31,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2022-11-25 18:14:31,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2022-11-25 18:14:45,007 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 537 DAG size of output: 14 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)
[2022-11-25 18:14:52,026 WARN L233 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 537 DAG size of output: 14 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)
[2022-11-25 18:14:59,425 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 455 DAG size of output: 15 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)
[2022-11-25 18:15:08,128 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 541 DAG size of output: 19 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter)
[2022-11-25 18:15:12,478 INFO L902 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true
[2022-11-25 18:15:12,478 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed.
[2022-11-25 18:15:12,479 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 22 61) the Hoare annotation is: (and (= |ULTIMATE.start_main_~A~0#1| (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1))
[2022-11-25 18:15:12,479 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed.
[2022-11-25 18:15:12,479 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (and (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) .cse0 |ULTIMATE.start_main_~r~0#1|)) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= .cse0 |ULTIMATE.start_main_~d~0#1|)))
[2022-11-25 18:15:12,480 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse0 .cse1 .cse2 .cse3) (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (<= 2 .cse4) .cse1 .cse2 (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse3 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse1 .cse2 .cse3 (= 2 |ULTIMATE.start_main_~d~0#1|))))
[2022-11-25 18:15:12,480 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed.
[2022-11-25 18:15:12,480 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed.
[2022-11-25 18:15:12,480 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2022-11-25 18:15:12,480 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (= |ULTIMATE.start_main_~A~0#1| (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1))
[2022-11-25 18:15:12,481 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed.
[2022-11-25 18:15:12,481 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (and (= (+ (div |ULTIMATE.start_main_~d~0#1| 2) |ULTIMATE.start_main_~A~0#1| 1) (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|)) (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1))
[2022-11-25 18:15:12,481 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed.
[2022-11-25 18:15:12,481 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2022-11-25 18:15:12,481 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|))) (or (and .cse0 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1))))
[2022-11-25 18:15:12,482 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed.
[2022-11-25 18:15:12,482 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse0 .cse1 .cse2 .cse3) (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (<= 2 .cse4) .cse1 .cse2 (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse3 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse1 .cse2 .cse3 (= 2 |ULTIMATE.start_main_~d~0#1|))))
[2022-11-25 18:15:12,482 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed.
[2022-11-25 18:15:12,482 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse0 .cse1 .cse2 .cse3) (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (<= 2 .cse4) .cse1 .cse2 (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse3 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse1 .cse2 .cse3 (= 2 |ULTIMATE.start_main_~d~0#1|))))
[2022-11-25 18:15:12,483 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse0 .cse1 .cse2 .cse3) (let ((.cse4 (div |ULTIMATE.start_main_~d~0#1| 2))) (and (<= 2 .cse4) .cse1 .cse2 (= (+ (* |ULTIMATE.start_main_~B~0#1| (div |ULTIMATE.start_main_~p~0#1| 2)) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse4 |ULTIMATE.start_main_~A~0#1|)) .cse3 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse4 |ULTIMATE.start_main_~r~0#1|))) (and .cse0 .cse1 .cse2 .cse3 (= 2 |ULTIMATE.start_main_~d~0#1|))))
[2022-11-25 18:15:12,483 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed.
[2022-11-25 18:15:12,483 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed.
[2022-11-25 18:15:12,483 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true
[2022-11-25 18:15:12,484 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed.
[2022-11-25 18:15:12,484 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed.
[2022-11-25 18:15:12,484 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed.
[2022-11-25 18:15:12,488 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1]
[2022-11-25 18:15:12,490 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-11-25 18:15:12,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:15:12 BoogieIcfgContainer
[2022-11-25 18:15:12,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-25 18:15:12,508 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-25 18:15:12,508 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-11-25 18:15:12,508 INFO L275 PluginConnector]: Witness Printer initialized
[2022-11-25 18:15:12,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:00:51" (3/4) ...
[2022-11-25 18:15:12,513 INFO L137 WitnessPrinter]: Generating witness for correct program
[2022-11-25 18:15:12,520 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert
[2022-11-25 18:15:12,525 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges
[2022-11-25 18:15:12,525 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges
[2022-11-25 18:15:12,525 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges
[2022-11-25 18:15:12,525 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2022-11-25 18:15:12,526 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2022-11-25 18:15:12,560 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/witness.graphml
[2022-11-25 18:15:12,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-25 18:15:12,561 INFO L158 Benchmark]: Toolchain (without parser) took 862300.89ms. Allocated memory was 174.1MB in the beginning and 362.8MB in the end (delta: 188.7MB). Free memory was 144.5MB in the beginning and 213.5MB in the end (delta: -69.0MB). Peak memory consumption was 121.5MB. Max. memory is 16.1GB.
[2022-11-25 18:15:12,561 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 125.8MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2022-11-25 18:15:12,562 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.37ms. Allocated memory is still 174.1MB. Free memory was 143.9MB in the beginning and 133.4MB in the end (delta: 10.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2022-11-25 18:15:12,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.47ms. Allocated memory is still 174.1MB. Free memory was 133.4MB in the beginning and 131.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-25 18:15:12,562 INFO L158 Benchmark]: Boogie Preprocessor took 40.20ms. Allocated memory is still 174.1MB. Free memory was 131.9MB in the beginning and 130.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-25 18:15:12,563 INFO L158 Benchmark]: RCFGBuilder took 343.61ms. Allocated memory is still 174.1MB. Free memory was 130.7MB in the beginning and 138.7MB in the end (delta: -8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2022-11-25 18:15:12,563 INFO L158 Benchmark]: TraceAbstraction took 861485.83ms. Allocated memory was 174.1MB in the beginning and 362.8MB in the end (delta: 188.7MB). Free memory was 138.0MB in the beginning and 216.6MB in the end (delta: -78.6MB). Peak memory consumption was 218.5MB. Max. memory is 16.1GB.
[2022-11-25 18:15:12,564 INFO L158 Benchmark]: Witness Printer took 52.84ms. Allocated memory is still 362.8MB. Free memory was 216.6MB in the beginning and 213.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-25 18:15:12,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25ms. Allocated memory is still 125.8MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 328.37ms. Allocated memory is still 174.1MB. Free memory was 143.9MB in the beginning and 133.4MB in the end (delta: 10.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 43.47ms. Allocated memory is still 174.1MB. Free memory was 133.4MB in the beginning and 131.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 40.20ms. Allocated memory is still 174.1MB. Free memory was 131.9MB in the beginning and 130.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 343.61ms. Allocated memory is still 174.1MB. Free memory was 130.7MB in the beginning and 138.7MB in the end (delta: -8.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 861485.83ms. Allocated memory was 174.1MB in the beginning and 362.8MB in the end (delta: 188.7MB). Free memory was 138.0MB in the beginning and 216.6MB in the end (delta: -78.6MB). Peak memory consumption was 218.5MB. Max. memory is 16.1GB.
* Witness Printer took 52.84ms. Allocated memory is still 362.8MB. Free memory was 216.6MB in the beginning and 213.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 17]: call to reach_error is unreachable
For all program executions holds that call to reach_error is unreachable at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 861.4s, OverallIterations: 14, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 436.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 40.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 mSolverCounterUnknown, 538 SdHoareTripleChecker+Valid, 92.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 485 mSDsluCounter, 1449 SdHoareTripleChecker+Invalid, 92.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1053 mSDsCounter, 791 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5040 IncrementalHoareTripleChecker+Invalid, 5848 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 791 mSolverCounterUnsat, 396 mSDtfsCounter, 5040 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1613 GetRequests, 1365 SyntacticMatches, 8 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 403.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=12, InterpolantAutomatonStates: 171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 97 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 165 PreInvPairs, 270 NumberOfFragments, 432 HoareAnnotationTreeSize, 165 FomulaSimplifications, 9832 FormulaSimplificationTreeSizeReduction, 3.7s HoareSimplificationTime, 11 FomulaSimplificationsInter, 158135 FormulaSimplificationTreeSizeReductionInter, 37.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 379.5s InterpolantComputationTime, 913 NumberOfCodeBlocks, 843 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1556 ConstructedInterpolants, 0 QuantifiedInterpolants, 63080 SizeOfPredicates, 43 NumberOfNonLiveVariables, 2140 ConjunctsInSsa, 382 ConjunctsInUnsatCore, 23 InterpolantComputations, 4 PerfectInterpolantSequences, 6388/7266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 22]: Loop Invariant
Derived loop invariant: (A == B * q + r && B * p == d) && B == 1
- InvariantResult [Line: 22]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 34]: Loop Invariant
Derived loop invariant: (((((B == d && q == 0) && B * p == d) && A == r) && B == 1) || ((((((2 <= d / 2 && B * p == d) && A == r) && B * (p / 2) + B * q + r == d / 2 + A) && B == 1) && d % 2 == 0) && d / 2 <= r)) || ((((q == 0 && B * p == d) && A == r) && B == 1) && 2 == d)
RESULT: Ultimate proved your program to be correct!
[2022-11-25 18:15:12,786 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process
[2022-11-25 18:15:12,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81fea8de-d417-4f69-b2f5-9d9a42b31f18/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE