./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-2.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 5e519f3a
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_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc --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 ba9918f9236391a08a9d6d8a63aa823d4042d99b397d7843518d83dccab2fbf8
--- 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-5e519f3
[2022-11-02 21:05:15,382 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 21:05:15,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 21:05:15,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 21:05:15,452 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 21:05:15,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 21:05:15,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 21:05:15,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 21:05:15,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 21:05:15,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 21:05:15,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 21:05:15,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 21:05:15,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 21:05:15,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 21:05:15,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 21:05:15,482 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 21:05:15,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 21:05:15,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 21:05:15,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 21:05:15,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 21:05:15,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 21:05:15,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 21:05:15,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 21:05:15,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 21:05:15,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 21:05:15,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 21:05:15,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 21:05:15,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 21:05:15,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 21:05:15,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 21:05:15,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 21:05:15,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 21:05:15,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 21:05:15,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 21:05:15,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 21:05:15,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 21:05:15,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 21:05:15,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 21:05:15,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 21:05:15,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 21:05:15,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 21:05:15,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-02 21:05:15,608 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 21:05:15,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 21:05:15,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 21:05:15,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 21:05:15,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 21:05:15,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 21:05:15,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 21:05:15,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 21:05:15,613 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 21:05:15,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 21:05:15,615 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 21:05:15,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 21:05:15,616 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 21:05:15,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 21:05:15,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 21:05:15,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 21:05:15,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 21:05:15,617 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 21:05:15,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 21:05:15,618 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 21:05:15,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 21:05:15,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 21:05:15,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 21:05:15,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 21:05:15,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:05:15,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 21:05:15,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 21:05:15,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 21:05:15,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 21:05:15,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 21:05:15,624 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 21:05:15,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 21:05:15,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 21:05:15,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba9918f9236391a08a9d6d8a63aa823d4042d99b397d7843518d83dccab2fbf8
[2022-11-02 21:05:16,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 21:05:16,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 21:05:16,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 21:05:16,049 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 21:05:16,050 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 21:05:16,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-regression/test24-2.c
[2022-11-02 21:05:16,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/data/c840e2a76/6a872e62a6ed47a3822d41c2e261afb1/FLAGe38b13e99
[2022-11-02 21:05:16,750 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 21:05:16,751 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/sv-benchmarks/c/ldv-regression/test24-2.c
[2022-11-02 21:05:16,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/data/c840e2a76/6a872e62a6ed47a3822d41c2e261afb1/FLAGe38b13e99
[2022-11-02 21:05:17,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/data/c840e2a76/6a872e62a6ed47a3822d41c2e261afb1
[2022-11-02 21:05:17,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 21:05:17,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 21:05:17,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 21:05:17,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 21:05:17,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 21:05:17,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201633b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17, skipping insertion in model container
[2022-11-02 21:05:17,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 21:05:17,205 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 21:05:17,571 WARN L230 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_b06127c3-d138-4394-8359-b82347309618/sv-benchmarks/c/ldv-regression/test24-2.c[807,820]
[2022-11-02 21:05:17,575 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:05:17,587 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 21:05:17,624 WARN L230 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_b06127c3-d138-4394-8359-b82347309618/sv-benchmarks/c/ldv-regression/test24-2.c[807,820]
[2022-11-02 21:05:17,632 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:05:17,653 INFO L208 MainTranslator]: Completed translation
[2022-11-02 21:05:17,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17 WrapperNode
[2022-11-02 21:05:17,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 21:05:17,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 21:05:17,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 21:05:17,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 21:05:17,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,717 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74
[2022-11-02 21:05:17,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 21:05:17,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 21:05:17,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 21:05:17,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 21:05:17,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 21:05:17,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 21:05:17,777 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 21:05:17,777 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 21:05:17,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (1/1) ...
[2022-11-02 21:05:17,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:05:17,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:05:17,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 21:05:17,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 21:05:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 21:05:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-02 21:05:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-02 21:05:17,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-11-02 21:05:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 21:05:17,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 21:05:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-11-02 21:05:17,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-02 21:05:17,968 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 21:05:17,971 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 21:05:18,133 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 21:05:18,139 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 21:05:18,139 INFO L300 CfgBuilder]: Removed 2 assume(true) statements.
[2022-11-02 21:05:18,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:18 BoogieIcfgContainer
[2022-11-02 21:05:18,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 21:05:18,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 21:05:18,144 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 21:05:18,148 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 21:05:18,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:17" (1/3) ...
[2022-11-02 21:05:18,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be63018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:18, skipping insertion in model container
[2022-11-02 21:05:18,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:17" (2/3) ...
[2022-11-02 21:05:18,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be63018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:18, skipping insertion in model container
[2022-11-02 21:05:18,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:18" (3/3) ...
[2022-11-02 21:05:18,152 INFO L112 eAbstractionObserver]: Analyzing ICFG test24-2.c
[2022-11-02 21:05:18,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 21:05:18,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 21:05:18,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:05:18,249 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;@258d1d9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:05:18,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-11-02 21:05:18,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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)
[2022-11-02 21:05:18,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2022-11-02 21:05:18,261 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:05:18,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:05:18,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:05:18,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:05:18,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1829445793, now seen corresponding path program 1 times
[2022-11-02 21:05:18,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:05:18,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129810952]
[2022-11-02 21:05:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:05:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:05:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:05:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:05:18,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129810952]
[2022-11-02 21:05:18,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129810952] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:05:18,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:05:18,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:05:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811709375]
[2022-11-02 21:05:18,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:05:18,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:05:18,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:05:18,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:05:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:05:18,719 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2022-11-02 21:05:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:05:18,756 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions.
[2022-11-02 21:05:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:05:18,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10
[2022-11-02 21:05:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:05:18,770 INFO L225 Difference]: With dead ends: 32
[2022-11-02 21:05:18,770 INFO L226 Difference]: Without dead ends: 15
[2022-11-02 21:05:18,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:05:18,779 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 21:05:18,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 21:05:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-11-02 21:05:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14.
[2022-11-02 21:05:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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)
[2022-11-02 21:05:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions.
[2022-11-02 21:05:18,831 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10
[2022-11-02 21:05:18,832 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:05:18,832 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions.
[2022-11-02 21:05:18,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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)
[2022-11-02 21:05:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions.
[2022-11-02 21:05:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-11-02 21:05:18,834 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:05:18,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:05:18,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 21:05:18,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:05:18,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:05:18,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1835948819, now seen corresponding path program 1 times
[2022-11-02 21:05:18,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:05:18,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786560028]
[2022-11-02 21:05:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:05:18,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:05:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:05:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:19,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:05:19,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786560028]
[2022-11-02 21:05:19,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786560028] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 21:05:19,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895780758]
[2022-11-02 21:05:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:05:19,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 21:05:19,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:05:19,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 21:05:19,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-02 21:05:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:05:19,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-11-02 21:05:19,164 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:05:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:19,241 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:05:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:19,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895780758] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:05:19,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 21:05:19,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-11-02 21:05:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121110144]
[2022-11-02 21:05:19,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:05:19,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-02 21:05:19,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:05:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-02 21:05:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2022-11-02 21:05:19,284 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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)
[2022-11-02 21:05:19,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:05:19,363 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions.
[2022-11-02 21:05:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-11-02 21:05:19,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13
[2022-11-02 21:05:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:05:19,368 INFO L225 Difference]: With dead ends: 29
[2022-11-02 21:05:19,369 INFO L226 Difference]: Without dead ends: 20
[2022-11-02 21:05:19,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2022-11-02 21:05:19,372 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 21:05:19,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 21:05:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-11-02 21:05:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-11-02 21:05:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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)
[2022-11-02 21:05:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions.
[2022-11-02 21:05:19,386 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13
[2022-11-02 21:05:19,387 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:05:19,387 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions.
[2022-11-02 21:05:19,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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)
[2022-11-02 21:05:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions.
[2022-11-02 21:05:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2022-11-02 21:05:19,388 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:05:19,388 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:05:19,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-02 21:05:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 21:05:19,599 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:05:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:05:19,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1825935181, now seen corresponding path program 2 times
[2022-11-02 21:05:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:05:19,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3112228]
[2022-11-02 21:05:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:05:19,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:05:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:05:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:20,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:05:20,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3112228]
[2022-11-02 21:05:20,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3112228] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 21:05:20,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379656554]
[2022-11-02 21:05:20,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 21:05:20,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 21:05:20,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:05:20,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 21:05:20,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-02 21:05:20,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 21:05:20,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 21:05:20,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 21:05:20,199 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:05:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:20,271 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:05:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:20,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379656554] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:05:20,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 21:05:20,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13
[2022-11-02 21:05:20,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087351820]
[2022-11-02 21:05:20,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:05:20,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-11-02 21:05:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:05:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-11-02 21:05:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2022-11-02 21:05:20,404 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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)
[2022-11-02 21:05:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:05:20,506 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions.
[2022-11-02 21:05:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-11-02 21:05:20,508 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19
[2022-11-02 21:05:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:05:20,511 INFO L225 Difference]: With dead ends: 41
[2022-11-02 21:05:20,511 INFO L226 Difference]: Without dead ends: 32
[2022-11-02 21:05:20,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2022-11-02 21:05:20,517 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 21:05:20,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 42 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 21:05:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2022-11-02 21:05:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2022-11-02 21:05:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 21:05:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions.
[2022-11-02 21:05:20,535 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19
[2022-11-02 21:05:20,536 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:05:20,536 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions.
[2022-11-02 21:05:20,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 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)
[2022-11-02 21:05:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions.
[2022-11-02 21:05:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2022-11-02 21:05:20,538 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:05:20,539 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:05:20,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-02 21:05:20,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 21:05:20,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:05:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:05:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2028479167, now seen corresponding path program 3 times
[2022-11-02 21:05:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:05:20,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772796439]
[2022-11-02 21:05:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:05:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:05:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:05:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:21,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:05:21,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772796439]
[2022-11-02 21:05:21,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772796439] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 21:05:21,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659876752]
[2022-11-02 21:05:21,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-02 21:05:21,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 21:05:21,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:05:21,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 21:05:21,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-02 21:05:21,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s)
[2022-11-02 21:05:21,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 21:05:21,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core
[2022-11-02 21:05:21,739 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:05:21,846 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:21,847 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:05:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:05:22,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659876752] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:05:22,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 21:05:22,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23
[2022-11-02 21:05:22,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681177050]
[2022-11-02 21:05:22,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:05:22,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-11-02 21:05:22,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:05:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-11-02 21:05:22,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506
[2022-11-02 21:05:22,182 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 21:05:22,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 21:05:22,306 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions.
[2022-11-02 21:05:22,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2022-11-02 21:05:22,307 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31
[2022-11-02 21:05:22,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 21:05:22,309 INFO L225 Difference]: With dead ends: 61
[2022-11-02 21:05:22,309 INFO L226 Difference]: Without dead ends: 52
[2022-11-02 21:05:22,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506
[2022-11-02 21:05:22,311 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-11-02 21:05:22,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 52 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-11-02 21:05:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2022-11-02 21:05:22,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2022-11-02 21:05:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 21:05:22,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions.
[2022-11-02 21:05:22,321 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 31
[2022-11-02 21:05:22,321 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 21:05:22,321 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions.
[2022-11-02 21:05:22,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 21:05:22,322 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions.
[2022-11-02 21:05:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2022-11-02 21:05:22,324 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 21:05:22,324 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:05:22,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-11-02 21:05:22,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 21:05:22,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2022-11-02 21:05:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:05:22,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1081145555, now seen corresponding path program 4 times
[2022-11-02 21:05:22,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:05:22,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726653880]
[2022-11-02 21:05:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:05:22,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:05:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:05:22,698 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:05:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:05:22,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:05:22,875 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:05:22,877 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2022-11-02 21:05:22,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-02 21:05:22,884 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1]
[2022-11-02 21:05:22,888 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-11-02 21:05:22,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:05:22 BoogieIcfgContainer
[2022-11-02 21:05:22,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-02 21:05:22,986 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-02 21:05:22,986 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-11-02 21:05:22,987 INFO L275 PluginConnector]: Witness Printer initialized
[2022-11-02 21:05:22,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:18" (3/4) ...
[2022-11-02 21:05:22,990 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2022-11-02 21:05:23,091 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/witness.graphml
[2022-11-02 21:05:23,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-02 21:05:23,092 INFO L158 Benchmark]: Toolchain (without parser) took 5970.48ms. Allocated memory was 119.5MB in the beginning and 165.7MB in the end (delta: 46.1MB). Free memory was 80.2MB in the beginning and 69.8MB in the end (delta: 10.4MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB.
[2022-11-02 21:05:23,093 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 119.5MB. Free memory was 97.0MB in the beginning and 96.9MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 21:05:23,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.53ms. Allocated memory is still 119.5MB. Free memory was 80.0MB in the beginning and 92.7MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2022-11-02 21:05:23,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.00ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 91.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 21:05:23,094 INFO L158 Benchmark]: Boogie Preprocessor took 48.51ms. Allocated memory is still 119.5MB. Free memory was 91.5MB in the beginning and 89.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-02 21:05:23,095 INFO L158 Benchmark]: RCFGBuilder took 373.93ms. Allocated memory is still 119.5MB. Free memory was 89.9MB in the beginning and 78.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2022-11-02 21:05:23,095 INFO L158 Benchmark]: TraceAbstraction took 4841.10ms. Allocated memory was 119.5MB in the beginning and 165.7MB in the end (delta: 46.1MB). Free memory was 78.6MB in the beginning and 72.9MB in the end (delta: 5.6MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB.
[2022-11-02 21:05:23,095 INFO L158 Benchmark]: Witness Printer took 105.22ms. Allocated memory is still 165.7MB. Free memory was 72.9MB in the beginning and 69.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2022-11-02 21:05:23,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.37ms. Allocated memory is still 119.5MB. Free memory was 97.0MB in the beginning and 96.9MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 513.53ms. Allocated memory is still 119.5MB. Free memory was 80.0MB in the beginning and 92.7MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 59.00ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 91.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 48.51ms. Allocated memory is still 119.5MB. Free memory was 91.5MB in the beginning and 89.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 373.93ms. Allocated memory is still 119.5MB. Free memory was 89.9MB in the beginning and 78.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 4841.10ms. Allocated memory was 119.5MB in the beginning and 165.7MB in the end (delta: 46.1MB). Free memory was 78.6MB in the beginning and 72.9MB in the end (delta: 5.6MB). Peak memory consumption was 53.9MB. Max. memory is 16.1GB.
* Witness Printer took 105.22ms. Allocated memory is still 165.7MB. Free memory was 72.9MB in the beginning and 69.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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
- CounterExampleResult [Line: 39]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L17] struct dummy ad1[20], *ad2;
[L18] int i, j, *pa;
[L19] j=0
VAL [ad1={5:0}, j=0]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=1]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=2]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=3]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=4]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=5]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=6]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=7]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=8]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=9]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=10]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=11]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=12]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=13]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=14]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=15]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=16]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=17]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=18]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=19]
[L19] COND TRUE j<20
[L20] ad1[j].a = __VERIFIER_nondet_int()
[L21] ad1[j].b = __VERIFIER_nondet_int()
[L19] j++
VAL [ad1={5:0}, j=20]
[L19] COND FALSE !(j<20)
VAL [ad1={5:0}, j=20]
[L23] i = __VERIFIER_nondet_int()
[L24] COND TRUE i >= 0 && i < 10
[L25] ad2 = ad1
[L26] ad1[i].a = i
[L27] pa = &ad1[i].a
[L28] EXPR ad2[i].a
[L28] i = ad2[i].a + 10
[L29] EXPR \read(*pa)
VAL [\read(*pa)=0, ad1={5:0}, ad2={5:0}, i=10, j=20, pa={5:0}]
[L29] COND FALSE !(i < *pa)
[L32] CALL, EXPR check(ad1, i)
[L12] EXPR ad1[b].a
[L12] return ad1[b].a == b;
[L32] RET, EXPR check(ad1, i)
[L32] COND TRUE !check(ad1, i)
[L39] reach_error()
VAL [ad1={5:0}, ad2={5:0}, i=10, j=20, pa={5:0}]
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 20, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 105 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 53 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=4, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 189 ConstructedInterpolants, 0 QuantifiedInterpolants, 389 SizeOfPredicates, 0 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/351 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2022-11-02 21:05:23,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b06127c3-d138-4394-8359-b82347309618/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE